Year % of relevant age group 1970 36.1803512573242 1971 38.7382888793945 1972 41.8024406433105 1973 43.9132995605469 1977 55.2914390563965 1978 57.4598617553711 1980 76.347900390625 1981 76.6658096313477 2004 84.3051528930664 2005 86.5268478393555 2014 99.8065185546875 2015 102.034477233887 2016 102.507278442383