| Year | Value | | 2022 | 817,307 | | 2021 | 792,773 | | 2020 | 771,492 | | 2019 | 752,984 | | 2018 | 736,901 | | 2017 | 721,858 | | 2016 | 707,161 | | 2015 | 692,231 | | 2014 | 676,533 | | 2013 | 660,451 | | 2012 | 644,349 | | 2011 | 627,879 | | 2010 | 609,640 | | 2009 | 588,994 | | 2008 | 566,636 | | 2007 | 543,093 | | 2006 | 519,163 | | 2005 | 496,569 | | 2004 | 476,372 | | 2003 | 458,253 | | 2002 | 441,994 | | 2001 | 427,415 | | 2000 | 414,335 | | 1999 | 402,278 | | 1998 | 390,750 | | 1997 | 379,592 | | 1996 | 368,613 | | 1995 | 357,726 | | 1994 | 346,882 | | 1993 | 336,099 | | 1992 | 325,572 | | 1991 | 315,463 | | 1990 | 305,768 | | 1989 | 296,518 | | 1988 | 282,844 | | 1987 | 263,855 | | 1986 | 244,183 | | 1985 | 224,516 | | 1984 | 205,008 | | 1983 | 191,000 | | 1982 | 183,626 | | 1981 | 178,190 | | 1980 | 174,106 | | 1979 | 171,361 | | 1978 | 169,884 | | 1977 | 169,333 | | 1976 | 169,210 | | 1975 | 169,101 | | 1974 | 168,853 | | 1973 | 168,427 | | 1972 | 167,771 | | 1971 | 166,869 | | 1970 | 165,727 | | 1969 | 164,292 | | 1968 | 162,397 | | 1967 | 160,186 | | 1966 | 158,075 | | 1965 | 156,292 | | 1964 | 154,744 | | 1963 | 153,424 | | 1962 | 152,184 | | 1961 | 150,548 | | 1960 | 148,269 |
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