Year | Value | 2022 | 174,176 | 2021 | 166,685 | 2020 | 161,857 | 2019 | 159,757 | 2018 | 158,115 | 2017 | 157,215 | 2016 | 155,904 | 2015 | 154,157 | 2014 | 152,584 | 2013 | 150,668 | 2012 | 148,394 | 2011 | 146,671 | 2010 | 146,258 | 2009 | 146,677 | 2008 | 148,163 | 2007 | 151,120 | 2006 | 154,597 | 2005 | 157,295 | 2004 | 158,139 | 2003 | 156,502 | 2002 | 152,781 | 2001 | 147,022 | 2000 | 139,786 | 1999 | 132,110 | 1998 | 124,480 | 1997 | 117,392 | 1996 | 111,410 | 1995 | 106,572 | 1994 | 102,702 | 1993 | 101,039 | 1992 | 99,711 | 1991 | 94,694 | 1990 | 85,992 | 1989 | 74,814 | 1988 | 65,449 | 1987 | 61,068 | 1986 | 61,459 | 1985 | 65,701 | 1984 | 73,469 | 1983 | 84,684 | 1982 | 95,113 | 1981 | 100,645 | 1980 | 102,628 | 1979 | 103,129 | 1978 | 100,737 | 1977 | 96,090 | 1976 | 92,022 | 1975 | 89,959 | 1974 | 89,407 | 1973 | 90,442 | 1972 | 92,592 | 1971 | 93,093 | 1970 | 90,620 | 1969 | 85,551 | 1968 | 77,817 | 1967 | 68,155 | 1966 | 58,915 | 1965 | 51,473 | 1964 | 45,509 | 1963 | 40,568 | 1962 | 37,071 | 1961 | 34,811 | 1960 | 33,474 |
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