Year % of relevant age group 1977 51.1695289611816 1978 59.1341590881348 1979 56.7342987060547 1980 59.1085205078125 1994 70.0945892333984 2003 79.3178634643555 2004 76.3425979614258 2009 63.2427711486816 2013 72.0969161987305 2014 70.3620223999023 2016 74.404167175293 2017 72.6309432983398 2018 74.5115203857422 2019 78.6282730102539 2020 78.3982620239258 2021 85.6242523193359