2007:
https://www.gallup.co.kr/gallupdb/rep...
2008:
https://www.gallup.co.kr/gallupdb/rep...
2009:
https://www.gallup.co.kr/gallupdb/rep...
2010:
https://www.gallup.co.kr/gallupdb/rep...
2011:
https://www.gallup.co.kr/gallupdb/rep...
2012:
https://www.gallup.co.kr/gallupdb/rep...
2013:
https://www.gallup.co.kr/gallupdb/rep...
2014:
https://www.gallup.co.kr/gallupdb/rep...
2015:
https://www.gallup.co.kr/gallupdb/rep...
2016:
https://www.gallup.co.kr/gallupdb/rep...
2017:
https://www.gallup.co.kr/gallupdb/rep...
2018:
https://www.gallup.co.kr/gallupdb/rep...
2019:
https://www.gallup.co.kr/gallupdb/rep...
2020:
https://www.gallup.co.kr/gallupdb/rep...
2021:
https://www.gallup.co.kr/gallupdb/rep...
2022:
https://www.gallup.co.kr/gallupdb/rep...
2023:
https://www.gallup.co.kr/gallupdb/rep...