Year | Value | 2022 | 68,964 | 2021 | 67,084 | 2020 | 64,969 | 2019 | 63,001 | 2018 | 61,190 | 2017 | 59,512 | 2016 | 57,972 | 2015 | 56,544 | 2014 | 55,076 | 2013 | 53,548 | 2012 | 52,030 | 2011 | 50,429 | 2010 | 48,721 | 2009 | 46,964 | 2008 | 45,228 | 2007 | 43,583 | 2006 | 42,036 | 2005 | 40,508 | 2004 | 38,841 | 2003 | 36,965 | 2002 | 35,040 | 2001 | 33,337 | 2000 | 32,098 | 1999 | 31,478 | 1998 | 31,427 | 1997 | 31,738 | 1996 | 32,190 | 1995 | 32,628 | 1994 | 32,992 | 1993 | 33,329 | 1992 | 33,751 | 1991 | 34,325 | 1990 | 34,822 | 1989 | 34,955 | 1988 | 34,736 | 1987 | 34,260 | 1986 | 33,605 | 1985 | 32,867 | 1984 | 32,160 | 1983 | 31,561 | 1982 | 31,107 | 1981 | 30,797 | 1980 | 30,330 | 1979 | 29,516 | 1978 | 28,509 | 1977 | 27,387 | 1976 | 26,217 | 1975 | 25,068 | 1974 | 24,989 | 1973 | 25,669 | 1972 | 26,237 | 1971 | 26,974 | 1970 | 27,688 | 1969 | 27,667 | 1968 | 27,120 | 1967 | 26,579 | 1966 | 25,870 | 1965 | 25,212 | 1964 | 24,645 | 1963 | 24,190 | 1962 | 23,793 | 1961 | 23,327 | 1960 | 22,721 |
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