Year % of relevant age group 1974 15.0897397994995 1976 14.9532699584961 1977 15.9504299163818 1978 15.2264699935913 1979 17.7332305908203 1980 17.4796104431152 1981 17.6344699859619 1982 19.2323608398438 1983 19.9681606292725 1984 21.8442306518555 1985 25.2347793579102 1986 26.6107406616211 1987 26.5517196655273 1999 40.3511085510254 2000 42.8652801513672 2001 42.9120407104492 2002 42.168041229248 2003 51.8505897521973 2004 57.9729385375977 2005 62.9832496643066 2006 59.0512313842773 2007 55.8521003723145 2008 50.4853897094727 2009 51.7980918884277 2010 52.311580657959 2011 54.2095413208008 2012 54.4737014770508 2013 55.163028717041 2014 54.2882385253906 2015 54.4440002441406 2016 50.2379989624023 2017 47.3549995422363 2018 47.4749984741211 2019 45.7224006652832 2020 46.3728790283203 2021 48.8917388916016 2022 45.8209991455078 2023 46.4210014343262