| Year | Value | | 2022 | 265,259 | | 2021 | 258,136 | | 2020 | 251,351 | | 2019 | 246,938 | | 2018 | 243,007 | | 2017 | 239,852 | | 2016 | 239,125 | | 2015 | 238,125 | | 2014 | 236,219 | | 2013 | 233,794 | | 2012 | 231,208 | | 2011 | 229,187 | | 2010 | 228,316 | | 2009 | 228,479 | | 2008 | 229,034 | | 2007 | 229,012 | | 2006 | 228,259 | | 2005 | 227,256 | | 2004 | 224,716 | | 2003 | 220,218 | | 2002 | 214,569 | | 2001 | 207,665 | | 2000 | 199,604 | | 1999 | 191,671 | | 1998 | 184,129 | | 1997 | 176,542 | | 1996 | 169,627 | | 1995 | 163,003 | | 1994 | 156,044 | | 1993 | 149,867 | | 1992 | 145,263 | | 1991 | 140,942 | | 1990 | 136,607 | | 1989 | 133,293 | | 1988 | 130,318 | | 1987 | 126,725 | | 1986 | 122,863 | | 1985 | 118,873 | | 1984 | 114,871 | | 1983 | 110,954 | | 1982 | 107,251 | | 1981 | 104,067 | | 1980 | 101,620 | | 1979 | 100,022 | | 1978 | 99,449 | | 1977 | 99,567 | | 1976 | 99,703 | | 1975 | 99,388 | | 1974 | 98,559 | | 1973 | 97,209 | | 1972 | 95,506 | | 1971 | 93,939 | | 1970 | 93,124 | | 1969 | 93,004 | | 1968 | 93,058 | | 1967 | 93,221 | | 1966 | 93,411 | | 1965 | 93,556 | | 1964 | 93,720 | | 1963 | 94,099 | | 1962 | 94,637 | | 1961 | 95,240 | | 1960 | 95,955 |
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