Year | Value | 2022 | 54,010 | 2021 | 53,578 | 2020 | 53,161 | 2019 | 52,956 | 2018 | 52,981 | 2017 | 53,032 | 2016 | 53,093 | 2015 | 53,207 | 2014 | 53,359 | 2013 | 53,482 | 2012 | 53,580 | 2011 | 53,530 | 2010 | 53,313 | 2009 | 53,093 | 2008 | 52,863 | 2007 | 52,584 | 2006 | 52,297 | 2005 | 52,015 | 2004 | 51,713 | 2003 | 51,398 | 2002 | 51,093 | 2001 | 50,782 | 2000 | 50,460 | 1999 | 50,133 | 1998 | 49,797 | 1997 | 49,430 | 1996 | 49,200 | 1995 | 49,124 | 1994 | 49,033 | 1993 | 48,954 | 1992 | 48,890 | 1991 | 48,818 | 1990 | 48,727 | 1989 | 48,599 | 1988 | 48,416 | 1987 | 48,172 | 1986 | 47,997 | 1985 | 47,917 | 1984 | 47,829 | 1983 | 47,732 | 1982 | 47,630 | 1981 | 47,517 | 1980 | 47,382 | 1979 | 47,215 | 1978 | 47,010 | 1977 | 46,755 | 1976 | 46,265 | 1975 | 45,563 | 1974 | 44,852 | 1973 | 44,153 | 1972 | 43,461 | 1971 | 42,752 | 1970 | 42,025 | 1969 | 41,266 | 1968 | 40,468 | 1967 | 39,610 | 1966 | 38,681 | 1965 | 37,695 | 1964 | 36,685 | 1963 | 35,694 | 1962 | 34,725 | 1961 | 33,787 | 1960 | 32,864 |
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