Year | Value | 2022 | 154,416 | 2021 | 158,604 | 2020 | 174,150 | 2019 | 181,428 | 2018 | 183,833 | 2017 | 185,741 | 2016 | 187,246 | 2015 | 186,259 | 2014 | 185,761 | 2013 | 184,154 | 2012 | 180,061 | 2011 | 173,077 | 2010 | 167,585 | 2009 | 165,489 | 2008 | 162,608 | 2007 | 154,411 | 2006 | 145,699 | 2005 | 138,419 | 2004 | 134,864 | 2003 | 134,294 | 2002 | 136,817 | 2001 | 135,336 | 2000 | 132,880 | 1999 | 135,244 | 1998 | 140,789 | 1997 | 142,247 | 1996 | 142,740 | 1995 | 141,597 | 1994 | 142,792 | 1993 | 145,636 | 1992 | 150,927 | 1991 | 156,450 | 1990 | 160,095 | 1989 | 156,688 | 1988 | 151,899 | 1987 | 148,571 | 1986 | 148,132 | 1985 | 151,473 | 1984 | 154,995 | 1983 | 155,031 | 1982 | 155,112 | 1981 | 149,726 | 1980 | 142,767 | 1979 | 139,968 | 1978 | 136,332 | 1977 | 131,626 | 1976 | 126,134 | 1975 | 120,900 | 1974 | 115,843 | 1973 | 111,020 | 1972 | 106,780 | 1971 | 102,228 | 1970 | 95,211 | 1969 | 86,431 | 1968 | 78,496 | 1967 | 72,000 | 1966 | 67,524 | 1965 | 66,621 | 1964 | 67,744 | 1963 | 68,536 | 1962 | 68,916 | 1961 | 69,029 | 1960 | 68,845 |
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