currently my data set looks like this:

dataex: gor year p_wine_on

----------------------- copy starting from the next line -----------------------
Code:
* Example generated by -dataex-. To install: ssc install dataex
clear
input byte gor int year float p_wine_on
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
2 2007 1.825
end
label values gor gor
label def gor 2 "north west", modify
There are 7 Gor groups which stand for government region. At the moment my p_wine_on (price for wine on trade) variable only varies with year (there are 6 years). However i want to replace the p_wine_on for different gor groups within the years
e.g at the moment for all Gor groups in 2007 price of wine on trade is 1.825 but now i want it to be different for each 7 groups and this is the case for every year. There are 6 years in the study

How shall i do this?