https://panel.gallup.co.kr/Contents/GallupKoreaDaily/GallupKoreaDailyOpinion_Monthly_201412.pdf
http://panel.gallup.co.kr/Contents/GallupKoreaDaily/GallupKoreaDailyOpinion_Monthly_201512.pdf
http://panel.gallup.co.kr/Contents/GallupKoreaDaily/GallupKoreaDailyOpinion_Monthly_201612.pdf
https://panel.gallup.co.kr/Contents/GallupKoreaDaily/GallupKoreaDailyOpinion_Monthly_201712.pdf
https://panel.gallup.co.kr/Contents/GallupKoreaDaily/GallupKoreaDailyOpinion_Monthly_201812.pdf
다죽일꺼라구