Year | Value | 2022 | 45,013 | 2021 | 46,125 | 2020 | 46,746 | 2019 | 47,161 | 2018 | 47,180 | 2017 | 47,012 | 2016 | 47,213 | 2015 | 47,576 | 2014 | 47,992 | 2013 | 49,045 | 2012 | 50,437 | 2011 | 51,368 | 2010 | 52,052 | 2009 | 52,231 | 2008 | 51,715 | 2007 | 50,731 | 2006 | 49,663 | 2005 | 48,806 | 2004 | 48,317 | 2003 | 48,468 | 2002 | 49,226 | 2001 | 50,653 | 2000 | 52,428 | 1999 | 54,213 | 1998 | 55,586 | 1997 | 56,509 | 1996 | 56,597 | 1995 | 56,105 | 1994 | 55,181 | 1993 | 53,688 | 1992 | 52,279 | 1991 | 51,001 | 1990 | 50,258 | 1989 | 50,226 | 1988 | 50,669 | 1987 | 51,773 | 1986 | 53,535 | 1985 | 55,727 | 1984 | 58,043 | 1983 | 59,982 | 1982 | 61,312 | 1981 | 61,629 | 1980 | 61,063 | 1979 | 59,840 | 1978 | 58,325 | 1977 | 57,118 | 1976 | 55,963 | 1975 | 54,961 | 1974 | 54,021 | 1973 | 53,152 | 1972 | 52,260 | 1971 | 51,215 | 1970 | 49,996 | 1969 | 48,574 | 1968 | 46,820 | 1967 | 44,625 | 1966 | 42,095 | 1965 | 39,514 | 1964 | 37,065 | 1963 | 34,837 | 1962 | 33,372 | 1961 | 32,709 | 1960 | 32,423 |
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