Year % of total population 1960 51.137699415102425 1961 51.11840393749344 1962 51.09459864248615 1963 51.06851671979858 1964 51.04474142469596 1965 51.0221779460422 1966 50.99953887092586 1967 50.98001363672624 1968 50.96230294326328 1969 50.94451553601609 1970 50.93381612682195 1971 50.9179300345379 1972 50.892173282095825 1973 50.86711988538064 1974 50.83829516355756 1975 50.8077943848744 1976 50.778647326934575 1977 50.75305204778438 1978 50.73666816417435 1979 50.7174997575247 1980 50.670186638157475 1981 50.62381165267243 1982 50.59656605272737 1983 50.57516888995068 1984 50.55767796449892 1985 50.53904181978901 1986 50.52096536457858 1987 50.507153695066236 1988 50.49854215997631 1989 50.483568902819606 1990 50.460598814284936 1991 50.43956250482264 1992 50.41981313632828 1993 50.40676554924359 1994 50.39065614368833 1995 50.37333461532237 1996 50.36054927241942 1997 50.34821983447617 1998 50.33779071773771 1999 50.32857642494947 2000 50.317469258898235 2001 50.304311935841454 2002 50.290087904109534 2003 50.276872460945114 2004 50.26594580167836 2005 50.25717641939134 2006 50.24659942612009 2007 50.23441714652194 2008 50.22171633375244 2009 50.20763240661677 2010 50.193066818895765 2011 50.17835547533996 2012 50.16405132152772 2013 50.151261577742524 2014 50.13955170711297 2015 50.129710966542454 2016 50.121359606246195 2017 50.11375492066266 2018 50.10749717045003 2019 50.10283142730702 2020 50.09827741478047 2021 50.09493790898563 2022 50.08532317679514 2023 50.08924618949725