Year | Value | 2022 | 56,002 | 2021 | 55,768 | 2020 | 55,488 | 2019 | 55,205 | 2018 | 54,955 | 2017 | 54,657 | 2016 | 54,436 | 2015 | 54,267 | 2014 | 54,053 | 2013 | 53,890 | 2012 | 53,776 | 2011 | 53,651 | 2010 | 53,518 | 2009 | 53,348 | 2008 | 53,150 | 2007 | 52,967 | 2006 | 52,830 | 2005 | 52,696 | 2004 | 52,538 | 2003 | 52,350 | 2002 | 52,089 | 2001 | 51,761 | 2000 | 51,428 | 1999 | 51,096 | 1998 | 50,759 | 1997 | 50,396 | 1996 | 49,992 | 1995 | 49,529 | 1994 | 49,020 | 1993 | 48,474 | 1992 | 47,900 | 1991 | 47,310 | 1990 | 46,580 | 1989 | 45,875 | 1988 | 45,144 | 1987 | 44,392 | 1986 | 43,617 | 1985 | 42,812 | 1984 | 41,980 | 1983 | 41,132 | 1982 | 40,269 | 1981 | 39,391 | 1980 | 38,553 | 1979 | 37,765 | 1978 | 36,970 | 1977 | 36,156 | 1976 | 35,336 | 1975 | 34,514 | 1974 | 33,673 | 1973 | 32,814 | 1972 | 31,954 | 1971 | 31,088 | 1970 | 30,210 | 1969 | 29,319 | 1968 | 28,437 | 1967 | 27,569 | 1966 | 26,706 | 1965 | 25,849 | 1964 | 25,018 | 1963 | 24,211 | 1962 | 23,410 | 1961 | 22,611 | 1960 | 21,829 |
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