Hi there, Can you please help me with how can I do this in STATA?

My data set:
Several waves of data from 60 countries. Around 3000 respondents from each country answered a question.
Four answer choices (1,2,3& 4)– respondents picked one.
Year List of countries Respondent ID Answer
1990/95 Country1
Country 2
Country 60
1996/2000 Country1
Country 2
Country 60
2000/2005 Country1
Country 2
Country 60
2006/2010 Country1
Country 2
Country 60
2011/2015 Country1
Country 2
Country 60
For the analysis, I need to find the country-level percentage of respondents’ answers for each choice.
2011/2015 Country1 % people answered 1
% people answered 2
% people answered 3
% people answered 4
Many thanks!