Year % of total population 1960 50.5505109690224 1961 50.540383420733 1962 50.495928785314 1963 50.4170805851633 1964 50.3348442896513 1965 50.2537186594395 1966 50.1746245755312 1967 50.1014275574724 1968 50.0381761306393 1969 49.9836021838832 1970 49.9764858016794 1971 50.0083333108595 1972 50.037716137162 1973 50.0646808917507 1974 50.0893939808471 1975 50.1180229059857 1976 50.1568075951129 1977 50.2115371559041 1978 50.2869420654031 1979 50.3870593572223 1980 50.5263260613459 1981 50.7266705398981 1982 50.9162147731779 1983 51.0591980689514 1984 51.1781664536902 1985 51.254840050468 1986 51.3092290397418 1987 51.3505880959899 1988 51.3764979382799 1989 51.4206789259746 1990 51.4689933016954 1991 51.4916307610047 1992 51.5072567552429 1993 51.538531344505 1994 51.5870788145099 1995 51.6353220445723 1996 51.6822950627378 1997 51.725213850319 1998 51.7636879547833 1999 51.7999943280149 2000 51.8366087201405 2001 51.8746780069454 2002 51.9159745644643 2003 51.963654639431 2004 52.0182979312105 2005 52.0796837665004 2006 52.1460497716771 2007 52.1827372702544 2008 52.18856844623 2009 52.1932831493626 2010 52.1972727008061 2011 52.2015612929947 2012 52.2063159186333 2013 52.2127533407203 2014 52.2225206883746 2015 52.2380921659312 2016 52.2615594567483 2017 52.2920684626916 2018 52.3244909216228 2019 52.3497516089014 2020 52.3667704848658 2021 52.381826454701 2022 52.3934756561778 2023 52.3979869104876