Year | Value | 2022 | 157,167 | 2021 | 162,309 | 2020 | 162,347 | 2019 | 156,577 | 2018 | 150,457 | 2017 | 146,425 | 2016 | 144,318 | 2015 | 144,221 | 2014 | 146,525 | 2013 | 150,359 | 2012 | 154,479 | 2011 | 158,286 | 2010 | 162,303 | 2009 | 165,245 | 2008 | 167,280 | 2007 | 168,479 | 2006 | 168,802 | 2005 | 168,101 | 2004 | 166,155 | 2003 | 163,033 | 2002 | 158,984 | 2001 | 153,735 | 2000 | 147,813 | 1999 | 141,530 | 1998 | 134,848 | 1997 | 128,468 | 1996 | 122,483 | 1995 | 115,969 | 1994 | 109,462 | 1993 | 98,862 | 1992 | 86,254 | 1991 | 72,226 | 1990 | 61,663 | 1989 | 57,687 | 1988 | 59,539 | 1987 | 66,377 | 1986 | 75,845 | 1985 | 85,058 | 1984 | 92,462 | 1983 | 97,055 | 1982 | 99,004 | 1981 | 99,123 | 1980 | 98,419 | 1979 | 98,063 | 1978 | 97,855 | 1977 | 97,706 | 1976 | 97,540 | 1975 | 96,691 | 1974 | 94,930 | 1973 | 91,705 | 1972 | 86,573 | 1971 | 79,379 | 1970 | 70,846 | 1969 | 62,004 | 1968 | 53,492 | 1967 | 46,258 | 1966 | 40,647 | 1965 | 36,647 | 1964 | 34,454 | 1963 | 33,628 | 1962 | 33,680 | 1961 | 33,503 | 1960 | 34,121 |
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