Year % of total population 1960 51.85054563693269 1961 51.82008626047315 1962 51.78890754709895 1963 51.75741065120577 1964 51.726848487293175 1965 51.69760323809623 1966 51.671125900714976 1967 51.64762659180657 1968 51.62766323160525 1969 51.61262383004574 1970 51.599034065698895 1971 51.583515626707296 1972 51.5690104546153 1973 51.55739035262652 1974 51.54521968127837 1975 51.53490682026613 1976 51.5290120701397 1977 51.523221672379044 1978 51.51821093362 1979 51.514907379091255 1980 51.50225323609151 1981 51.48878783536854 1982 51.483474526191436 1983 51.47737663815452 1984 51.47148119175364 1985 51.46526532470499 1986 51.4568977514929 1987 51.447050377661256 1988 51.43815474508003 1989 51.42906260107392 1990 51.41836089488559 1991 51.40722169438713 1992 51.39712170079831 1993 51.38811266772581 1994 51.38143299392887 1995 51.37871581547566 1996 51.378465444880945 1997 51.379711465155594 1998 51.383092021382076 1999 51.38793574971504 2000 51.38657492347982 2001 51.383177998041845 2002 51.37809746300777 2003 51.365927147059416 2004 51.350417839535915 2005 51.333042738317786 2006 51.31840328788052 2007 51.30467725743272 2008 51.29105433636177 2009 51.281501754577945 2010 51.27441711425512 2011 51.267231393175585 2012 51.257074744213156 2013 51.24695171547943 2014 51.2361524635995 2015 51.218417937841295 2016 51.19842278354398 2017 51.181252826020184 2018 51.16540086818859 2019 51.15356765591865 2020 51.14732527746438 2021 51.14509147569434 2022 51.13014125446769 2023 51.115308126147724