Annual % of total population
1960 42.4521657745093
1961 42.3017099803234
1962 42.2245222548294
1963 42.1232093731285
1964 42.0756715938212
1965 42.0970075144912
1966 42.1197041643382
1967 42.1320713663736
1968 42.1252793960326
1969 42.115348150471
1970 42.1109863636749
1971 42.0123973137417
1972 41.7963418539404
1973 41.545606886378
1974 41.3104015246471
1975 41.1000915142078
1976 40.9160553489963
1977 40.6244412305772
1978 40.2107667826927
1979 39.8312772163556
1980 39.5003381975471
1981 39.2972970550312
1982 39.1820672905327
1983 39.0092447629977
1984 38.7803922073062
1985 38.4949881734831
1986 38.2323331522298
1987 38.1271824703961
1988 38.1732326433438
1989 38.311148628694
1990 38.4964392263621
1991 38.7678071634523
1992 39.0626558356045
1993 39.2122252090487
1994 39.1476778273098
1995 38.8888062870066
1996 38.4861013778872
1997 37.8622902435447
1998 37.0609936173899
1999 36.1941912617258
2000 35.2406061055493
2001 34.2356953506007
2002 33.2318300544142
2003 32.2791043252836
2004 31.4321024862164
2005 30.727000178866
2006 30.1437091866371
2007 29.6558154157421
2008 29.302695663228
2009 29.0189318790711
2010 28.7358473643723
2011 28.5212185867199
2012 28.4282531163354
2013 28.4237501340174
2014 28.3948885310607
2015 28.2753516576484
2016 28.365853602124
2017 28.5860959589855
2018 28.68152980046
2019 28.7452694924885
2020 28.7396723302935
2021 28.6729624931736
2022 28.5507958905087
2023 28.299399244332