Year % of total population 1960 6.165493691237973 1961 6.337175830214849 1962 6.507103966036787 1963 6.68132757833019 1964 6.860678897164779 1965 7.043164764205012 1966 7.230848127093585 1967 7.42411080366336 1968 7.622088142427207 1969 7.822184282779808 1970 8.026332196928724 1971 8.233127032911234 1972 8.442497533001287 1973 8.65748847529224 1974 8.867481003743299 1975 9.028846424607265 1976 9.179432496085239 1977 9.331723780790103 1978 9.48839669577914 1979 9.648579641011528 1980 9.813895748797641 1981 9.983607718798194 1982 10.160728769236938 1983 10.34466758052136 1984 10.53687317849072 1985 10.736325444829435 1986 10.944160291684234 1987 11.159487641670324 1988 11.34432958276006 1989 11.335586636155904 1990 11.326924500230941 1991 11.317967852677958 1992 11.30914048002778 1993 11.29954459297622 1994 11.29096854836798 1995 11.283604962262801 1996 11.278011561854246 1997 11.272971586455455 1998 11.282346445776573 1999 11.291736686137032 2000 11.291348223037605 2001 11.295374386814824 2002 11.371203155368988 2003 11.460797533311089 2004 11.559717620876107 2005 11.665963612414805 2006 11.78142591540567 2007 11.906499141519006 2008 12.042506230423276 2009 12.187413241657728 2010 12.342944855911176 2011 12.508732962025881 2012 12.68480944892314 2013 12.869246083183409 2014 13.063147647320081 2015 13.265181954283742 2016 13.475184651442722 2017 13.693098941480496 2018 13.918736629275442 2019 14.0896284091232 2020 14.267129155266725 2021 14.450770041285828 2022 14.633187831524625 2023 14.80134886468479