Year % of relevant age group 1975 83.223991394043 1976 81.6737518310547 1977 84.2425384521484 1978 84.2967376708984 1979 83.9667205810547 1983 80.6641387939453 2010 87.8622589111328 2011 83.3306732177734 2012 83.7227478027344 2013 83.8762512207031 2014 81.5906524658203 2015 80.5688018798828 2016 79.0113525390625 2017 78.4026489257812 2018 76.6966171264648 2019 77.8626022338867 2020 77.3051834106445 2021 76.8128814697266