Year % of total population 1960 51.1694543484494 1961 51.0838150909224 1962 50.9997194504579 1963 50.9347974013392 1964 50.8883466101337 1965 50.8437328858904 1966 50.7963629891352 1967 50.7490657445578 1968 50.7036941875688 1969 50.6568930463244 1970 50.6136052906503 1971 50.5677058291568 1972 50.5224222012401 1973 50.4855951581383 1974 50.4515511752875 1975 50.3922514046154 1976 50.3130088066096 1977 50.2347728511865 1978 50.1563271441368 1979 50.0855741680111 1980 50.0200551815084 1981 49.9647181219185 1982 49.923276105415 1983 49.8617690245981 1984 49.8126662110189 1985 49.7955551666187 1986 49.7794315353057 1987 49.7668864536182 1988 49.7520739748791 1989 49.7336497048971 1990 49.5773919992976 1991 49.3700096326595 1992 49.3427930855402 1993 49.3069344997658 1994 49.2634098093448 1995 49.2255960777102 1996 49.2016210776391 1997 49.193051651072 1998 49.2010909267269 1999 49.2070058066281 2000 49.215846511358 2001 49.2316665146255 2002 49.2509146085456 2003 49.2616783564487 2004 49.2750397364631 2005 49.3023949290914 2006 49.3335787465232 2007 49.3675022159582 2008 49.4030873543528 2009 49.4378584126363 2010 49.4713374972263 2011 49.5112588641881 2012 49.5477567905738 2013 49.576774897099 2014 49.6059209655799 2015 49.6335799115805 2016 49.6600898791504 2017 49.686790582807 2018 49.7113853238573 2019 49.7351708195854 2020 49.7574880336128 2021 49.7778918538395 2022 49.7993750708368 2023 49.8209334640244