Year % of total population 1960 2.97574504022004 1961 3.00096650852125 1962 3.02553313444109 1963 3.05033972420866 1964 3.07582084191333 1965 3.10178495829881 1966 3.12834589879391 1967 3.15521310746942 1968 3.1814279392746 1969 3.20725998322089 1970 3.23304764270233 1971 3.25944621195543 1972 3.28546778687963 1973 3.30959601492596 1974 3.33183965332925 1975 3.35297924870567 1976 3.37457902745451 1977 3.39392375345608 1978 3.41139664324185 1979 3.42964085820819 1980 3.44774526260218 1981 3.46571816759673 1982 3.48200698789585 1983 3.49416536004291 1984 3.50404075229806 1985 3.51373691066662 1986 3.52368906467028 1987 3.53547030252419 1988 3.54739621740481 1989 3.55845787405295 1990 3.5681692939577 1991 3.57764355710337 1992 3.58623432667542 1993 3.59518076503998 1994 3.60672622504382 1995 3.62138686387779 1996 3.64083404432301 1997 3.66472837437755 1998 3.69359315282647 1999 3.72674335837687 2000 3.76365349938611 2001 3.80465130499406 2002 3.85718511846869 2003 3.92152438501123 2004 3.99187969988423 2005 4.08269929248917 2006 4.19839442488172 2007 4.3268826373628 2008 4.46140296107991 2009 4.59677623153874 2010 4.72790845844624 2011 4.86376107090636 2012 5.01774488419504 2013 5.1906401955623 2014 5.35905367199442 2015 5.50483731167892 2016 5.63332802846225 2017 5.75030526363802 2018 5.86275084969463 2019 5.97224232637095 2020 6.03979862431386 2021 6.04872027672925 2022 6.08722687689172 2023 6.17139626088186