| Year | Value | | 2022 | 366,615 | | 2021 | 348,930 | | 2020 | 331,411 | | 2019 | 314,532 | | 2018 | 298,666 | | 2017 | 283,685 | | 2016 | 269,501 | | 2015 | 256,480 | | 2014 | 244,710 | | 2013 | 233,849 | | 2012 | 225,030 | | 2011 | 217,449 | | 2010 | 210,002 | | 2009 | 203,606 | | 2008 | 197,903 | | 2007 | 192,614 | | 2006 | 187,856 | | 2005 | 183,608 | | 2004 | 179,807 | | 2003 | 176,573 | | 2002 | 173,839 | | 2001 | 171,370 | | 2000 | 169,142 | | 1999 | 166,662 | | 1998 | 164,204 | | 1997 | 162,482 | | 1996 | 160,696 | | 1995 | 158,278 | | 1994 | 156,496 | | 1993 | 155,635 | | 1992 | 154,825 | | 1991 | 154,495 | | 1990 | 154,466 | | 1989 | 153,124 | | 1988 | 150,172 | | 1987 | 146,586 | | 1986 | 142,967 | | 1985 | 139,699 | | 1984 | 137,401 | | 1983 | 136,149 | | 1982 | 135,490 | | 1981 | 135,183 | | 1980 | 134,991 | | 1979 | 134,977 | | 1978 | 135,173 | | 1977 | 135,459 | | 1976 | 135,902 | | 1975 | 136,461 | | 1974 | 136,945 | | 1973 | 137,263 | | 1972 | 137,468 | | 1971 | 137,733 | | 1970 | 138,033 | | 1969 | 138,290 | | 1968 | 138,549 | | 1967 | 138,713 | | 1966 | 138,592 | | 1965 | 138,067 | | 1964 | 137,148 | | 1963 | 135,860 | | 1962 | 134,243 | | 1961 | 132,395 | | 1960 | 130,359 |
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