statistical significance - which test to choose??

I have a data:

1. In 2014. year 62% of citizens of the country answered to the question... "yes" (7676 persons)
2. in 2016. year 64% of citizens of the sane country answered to the same question yes (=6765 persons)

For calculating if the difference between two data is statistically significal.. do i need to use t-test or z-test? =)