| Year | Value | | 2022 | 305,113 | | 2021 | 294,366 | | 2020 | 295,105 | | 2019 | 291,310 | | 2018 | 288,362 | | 2017 | 286,523 | | 2016 | 285,024 | | 2015 | 283,442 | | 2014 | 280,184 | | 2013 | 276,372 | | 2012 | 272,220 | | 2011 | 266,213 | | 2010 | 259,080 | | 2009 | 252,211 | | 2008 | 244,684 | | 2007 | 235,649 | | 2006 | 226,409 | | 2005 | 217,336 | | 2004 | 207,764 | | 2003 | 197,503 | | 2002 | 186,909 | | 2001 | 176,072 | | 2000 | 167,123 | | 1999 | 162,840 | | 1998 | 166,991 | | 1997 | 177,206 | | 1996 | 187,496 | | 1995 | 195,132 | | 1994 | 196,325 | | 1993 | 192,386 | | 1992 | 187,267 | | 1991 | 182,313 | | 1990 | 178,064 | | 1989 | 173,479 | | 1988 | 168,337 | | 1987 | 163,443 | | 1986 | 159,203 | | 1985 | 155,944 | | 1984 | 153,029 | | 1983 | 149,888 | | 1982 | 145,842 | | 1981 | 141,075 | | 1980 | 137,223 | | 1979 | 133,220 | | 1978 | 128,547 | | 1977 | 124,037 | | 1976 | 119,577 | | 1975 | 114,929 | | 1974 | 110,905 | | 1973 | 107,764 | | 1972 | 104,679 | | 1971 | 101,345 | | 1970 | 99,372 | | 1969 | 97,869 | | 1968 | 95,423 | | 1967 | 92,695 | | 1966 | 89,400 | | 1965 | 86,081 | | 1964 | 82,650 | | 1963 | 79,317 | | 1962 | 76,789 | | 1961 | 74,402 | | 1960 | 72,148 |
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