Year % of total population 1960 96.275 1961 95.976 1962 95.653 1963 95.306 1964 94.931 1965 94.53 1966 94.098 1967 93.288 1968 92.375 1969 91.351 1970 90.20400000000001 1971 88.922 1972 88.7 1973 88.493 1974 88.283 1975 88.07 1976 87.853 1977 87.634 1978 87.41 1979 87.18299999999999 1980 86.953 1981 86.758 1982 86.572 1983 86.384 1984 86.194 1985 86.002 1986 85.807 1987 85.61 1988 85.411 1989 85.209 1990 85.006 1991 85.184 1992 85.371 1993 85.555 1994 85.738 1995 85.919 1996 86.099 1997 86.276 1998 86.451 1999 86.625 2000 86.79599999999999 2001 86.818 2002 86.836 2003 86.854 2004 86.873 2005 86.891 2006 86.909 2007 86.92699999999999 2008 86.945 2009 86.963 2010 86.981 2011 87 2012 87.018 2013 87.022 2014 87.012 2015 86.988 2016 86.95 2017 86.898 2018 86.831 2019 86.75 2020 86.655 2021 86.544 2022 86.418 2023 86.277