Dear Statilist

May it is very simple but still I cannot find my answer

I have panel data for 29 countries and T= 40 years
I want to plot my dependent variable as a time series (only one line)

I used the following command but it plots the mean for the series since I want to plot the original panel data series ?
Any help?

PHP Code:
xtset CountryID Year
lgraph GDP Year

then it gives me this graph
[/PHP]

it gives me the following graph
Array

So any idea to plot the panel data as one line without plotting the mean??