Hi,
I have data on the number of people of each age in each local authority. The problem at the moment is my data is separated by gender, but I would like totals of males and females of each age in each local authority at each time. I just want to sum the value for female+male when everything else is the same.

Thank You

Code:
* Example generated by -dataex-. To install: ssc install dataex
clear
input str36 name str9 code str7 gender int year float age long(allages noofpeople) float agecat
"Shepway"                   "E07000112" "Female" 2015 0   55620   499 10
"Rossendale"                "E07000125" "Female" 2013 0   34946   407 10
"Hertsmere"                 "E07000098" "Female" 2016 0   53812   656 10
"Kettering"                 "E07000153" "Female" 2015 0   49607   602 10
"Eastbourne"                "E07000061" "Female" 2015 0   52873   588 10
"Carlisle"                  "E07000028" "Female" 2015 0   55330   558 10
"Epsom and Ewell"           "E07000208" "Male"   2013 0   37224   475 10
"West Sussex"               "E10000032" "Female" 2016 0  435167  4438 10
"Derby"                     "E06000015" "Male"   2015 0  125664  1802 10
"Wealden"                   "E07000065" "Male"   2015 0   75561   711 10
"Cheltenham"                "E07000078" "Female" 2012 0   59204   689 10
"Barrow-in-Furness"         "E07000027" "Male"   2015 0   33472   369 10
"Nottingham"                "E06000018" "Male"   2016 0  164371  2253 10
"Islington"                 "E09000019" "Female" 2014 0  111195  1365 10
"City of London"            "E09000001" "Female" 2014 0    2712    29 10
"Sheffield"                 "E08000019" "Male"   2016 0  285353  3376 10
"Exeter"                    "E07000041" "Male"   2014 0   60520   740 10
"Southampton"               "E06000045" "Male"   2016 0  127762  1697 10
"Rugby"                     "E07000220" "Male"   2012 0   50339   692 10
"Northampton"               "E07000154" "Female" 2016 0  113200  1625 10
"East Hertfordshire"        "E07000242" "Female" 2012 0   70842   821 10
"North Norfolk"             "E07000147" "Male"   2016 0   50372   394 10
"Surrey"                    "E10000030" "Female" 2012 0  583530  7026 10
"Daventry"                  "E07000151" "Male"   2016 0   40485   423 10
"Epsom and Ewell"           "E07000208" "Female" 2015 0   40516   466 10
"Bolsover"                  "E07000033" "Male"   2016 0   38625   429 10
"Taunton Deane"             "E07000190" "Female" 2016 0   59615   601 10
"Mansfield"                 "E07000174" "Female" 2013 0   53572   649 10
"Bexley"                    "E09000004" "Male"   2016 0  118293  1634 10
"Dover"                     "E07000108" "Male"   2016 0   56381   580 10
"Sedgemoor"                 "E07000188" "Male"   2016 0   59599   706 10
"Herefordshire, County of"  "E06000019" "Female" 2013 0   94386   927 10
"Havering"                  "E09000016" "Male"   2014 0  118199  1616 10
"Bromley"                   "E09000006" "Male"   2015 0  156274  2096 10
"North Tyneside"            "E08000022" "Female" 2013 0  104565  1105 10
"Broxbourne"                "E07000095" "Female" 2012 0   48838   630 10
"North Somerset"            "E06000024" "Male"   2012 0   99451  1190 10
"Rossendale"                "E07000125" "Female" 2014 0   35225   416 10
"Harrow"                    "E09000015" "Female" 2016 0  124736  1799 10
"Corby"                     "E07000150" "Female" 2013 0   32753   455 10
"Torridge"                  "E07000046" "Male"   2015 0   32438   298 10
"Richmond upon Thames"      "E09000027" "Male"   2013 0   92871  1453 10
"Northumberland"            "E06000057" "Male"   2012 0  154470  1630 10
"Rushcliffe"                "E07000176" "Male"   2015 0   56368   547 10
"Tendring"                  "E07000076" "Female" 2013 0   72382   642 10
"Wycombe"                   "E07000007" "Male"   2012 0   85087  1163 10
"Wyre Forest"               "E07000239" "Female" 2013 0   49891   534 10
"Northumberland"            "E06000057" "Male"   2016 0  154971  1471 10
"Gloucestershire"           "E10000013" "Male"   2012 0  295517  3578 10
"South Somerset"            "E07000189" "Male"   2015 0   81388   856 10
"Gedling"                   "E07000173" "Male"   2013 0   56125   622 10
"Crawley"                   "E07000226" "Female" 2016 0   55788   790 10
"Wyre"                      "E07000128" "Male"   2014 0   52846   511 10
"Colchester"                "E07000071" "Female" 2012 0   89152  1116 10
"Lincolnshire"              "E10000019" "Male"   2013 0  353402  3865 10
"Derbyshire Dales"          "E07000035" "Male"   2013 0   35151   264 10
"Brentwood"                 "E07000068" "Male"   2014 0   36844   428 10
"Chorley"                   "E07000118" "Male"   2015 0   56591   610 10
"Cheshire West and Chester" "E06000050" "Male"   2015 0  162767  1855 10
"High Peak"                 "E07000037" "Female" 2013 0   46275   466 10
"Dartford"                  "E07000107" "Female" 2013 0   50809   731 10
"West Lancashire"           "E07000127" "Male"   2015 0   54623   560 10
"Herefordshire, County of"  "E06000019" "Female" 2016 0   95645   832 10
"Forest Heath"              "E07000201" "Female" 2014 0   30975   478 10
"Slough"                    "E06000039" "Female" 2014 0   72095  1294 10
"Isle of Wight"             "E06000046" "Female" 2013 0   70868   618 10
"Ryedale"                   "E07000167" "Male"   2012 0   25626   226 10
"Cannock Chase"             "E07000192" "Female" 2012 0   49582   531 10
"Cheshire East"             "E06000049" "Female" 2012 0  189804  1991 10
"East Hertfordshire"        "E07000242" "Female" 2015 0   73613   785 10
"Milton Keynes"             "E06000042" "Male"   2012 0  125061  2089 10
"South Tyneside"            "E08000023" "Female" 2013 0   76738   813 10
"Winchester"                "E07000094" "Female" 2013 0   61224   592 10
"East Northamptonshire"     "E07000152" "Male"   2016 0   45226   488 10
"Barnsley"                  "E08000016" "Female" 2013 0  119713  1444 10
"Stevenage"                 "E07000243" "Female" 2012 0   43066   628 10
"Wellingborough"            "E07000156" "Female" 2015 0   39476   447 10
"Lancashire"                "E10000017" "Male"   2015 0  586252  6793 10
"Tameside"                  "E08000008" "Male"   2016 0  109506  1474 10
"Rochdale"                  "E08000005" "Male"   2013 0  103940  1573 10
"Herefordshire, County of"  "E06000019" "Male"   2016 0   93887   916 10
"NORTH WEST"                "E12000002" "Female" 2015 0 3640124 41715 10
"North Devon"               "E07000043" "Male"   2015 0   46104   448 10
"Rother"                    "E07000064" "Female" 2012 0   47680   342 10
"Bromsgrove"                "E07000234" "Male"   2015 0   47331   477 10
"St Albans"                 "E07000240" "Male"   2014 0   71081   931 10
"Darlington"                "E06000005" "Male"   2016 0   51804   619 10
"NORTH EAST"                "E12000001" "Male"   2013 0 1278374 15323 10
"Bolsover"                  "E07000033" "Male"   2012 0   37676   431 10
"South Bucks"               "E07000006" "Male"   2013 0   32960   389 10
"Northamptonshire"          "E10000021" "Female" 2013 0  357859  4479 10
"Warwick"                   "E07000222" "Male"   2012 0   69158   870 10
"Welwyn Hatfield"           "E07000241" "Male"   2013 0   55876   697 10
"Spelthorne"                "E07000213" "Female" 2012 0   48965   575 10
"Southend-on-Sea"           "E06000033" "Female" 2015 0   91408  1106 10
"Bracknell Forest"          "E06000036" "Female" 2012 0   57884   790 10
"Torridge"                  "E07000046" "Male"   2016 0   32837   359 10
"Worthing"                  "E07000229" "Female" 2013 0   55209   555 10
"Charnwood"                 "E07000130" "Female" 2013 0   84782   882 10
"Reigate and Banstead"      "E07000211" "Male"   2012 0   68385   990 10
end