Year | Value | 2022 | 52,928 | 2021 | 53,209 | 2020 | 53,434 | 2019 | 53,636 | 2018 | 53,856 | 2017 | 54,026 | 2016 | 54,258 | 2015 | 54,538 | 2014 | 54,773 | 2013 | 55,053 | 2012 | 55,373 | 2011 | 55,676 | 2010 | 55,967 | 2009 | 56,219 | 2008 | 56,444 | 2007 | 56,681 | 2006 | 56,962 | 2005 | 57,245 | 2004 | 57,494 | 2003 | 57,712 | 2002 | 57,862 | 2001 | 57,941 | 2000 | 58,002 | 1999 | 58,069 | 1998 | 58,120 | 1997 | 58,129 | 1996 | 58,088 | 1995 | 57,982 | 1994 | 57,816 | 1993 | 57,604 | 1992 | 57,359 | 1991 | 57,057 | 1990 | 56,879 | 1989 | 56,840 | 1988 | 56,751 | 1987 | 56,627 | 1986 | 56,459 | 1985 | 56,242 | 1984 | 55,983 | 1983 | 55,697 | 1982 | 55,380 | 1981 | 55,023 | 1980 | 54,599 | 1979 | 54,126 | 1978 | 53,634 | 1977 | 53,111 | 1976 | 52,565 | 1975 | 51,999 | 1974 | 51,386 | 1973 | 50,728 | 1972 | 50,041 | 1971 | 49,319 | 1970 | 48,551 | 1969 | 47,737 | 1968 | 46,904 | 1967 | 46,065 | 1966 | 45,203 | 1965 | 44,326 | 1964 | 43,455 | 1963 | 42,596 | 1962 | 41,721 | 1961 | 40,816 | 1960 | 39,903 |
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