Year | Value | 2022 | 171,495 | 2021 | 170,035 | 2020 | 169,075 | 2019 | 167,580 | 2018 | 164,283 | 2017 | 159,938 | 2016 | 156,487 | 2015 | 154,585 | 2014 | 154,378 | 2013 | 157,733 | 2012 | 163,882 | 2011 | 169,527 | 2010 | 174,359 | 2009 | 178,940 | 2008 | 182,607 | 2007 | 184,502 | 2006 | 185,513 | 2005 | 186,368 | 2004 | 186,862 | 2003 | 186,250 | 2002 | 185,954 | 2001 | 187,313 | 2000 | 189,237 | 1999 | 191,517 | 1998 | 194,254 | 1997 | 197,048 | 1996 | 198,581 | 1995 | 199,802 | 1994 | 202,253 | 1993 | 205,966 | 1992 | 209,892 | 1991 | 213,301 | 1990 | 213,844 | 1989 | 207,157 | 1988 | 194,924 | 1987 | 178,482 | 1986 | 165,095 | 1985 | 154,876 | 1984 | 147,908 | 1983 | 147,069 | 1982 | 148,513 | 1981 | 145,909 | 1980 | 142,324 | 1979 | 141,160 | 1978 | 137,134 | 1977 | 134,644 | 1976 | 134,722 | 1975 | 136,462 | 1974 | 139,296 | 1973 | 142,993 | 1972 | 145,829 | 1971 | 147,182 | 1970 | 148,170 | 1969 | 148,566 | 1968 | 149,202 | 1967 | 150,250 | 1966 | 151,287 | 1965 | 152,671 | 1964 | 150,254 | 1963 | 145,689 | 1962 | 143,224 | 1961 | 140,427 | 1960 | 136,955 |
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