| Year | Value | | 2022 | 551,010 | | 2021 | 532,959 | | 2020 | 516,157 | | 2019 | 498,354 | | 2018 | 480,354 | | 2017 | 463,052 | | 2016 | 446,018 | | 2015 | 428,352 | | 2014 | 410,699 | | 2013 | 394,804 | | 2012 | 381,143 | | 2011 | 370,141 | | 2010 | 361,736 | | 2009 | 354,743 | | 2008 | 348,767 | | 2007 | 343,542 | | 2006 | 337,755 | | 2005 | 331,562 | | 2004 | 325,478 | | 2003 | 319,807 | | 2002 | 315,257 | | 2001 | 311,412 | | 2000 | 307,803 | | 1999 | 304,058 | | 1998 | 300,536 | | 1997 | 296,639 | | 1996 | 292,246 | | 1995 | 288,192 | | 1994 | 284,348 | | 1993 | 280,654 | | 1992 | 277,316 | | 1991 | 273,293 | | 1990 | 267,199 | | 1989 | 260,198 | | 1988 | 253,190 | | 1987 | 246,180 | | 1986 | 239,499 | | 1985 | 235,089 | | 1984 | 233,531 | | 1983 | 233,220 | | 1982 | 233,600 | | 1981 | 234,145 | | 1980 | 233,411 | | 1979 | 230,887 | | 1978 | 227,323 | | 1977 | 223,322 | | 1976 | 219,167 | | 1975 | 215,288 | | 1974 | 211,753 | | 1973 | 209,165 | | 1972 | 207,084 | | 1971 | 204,521 | | 1970 | 201,587 | | 1969 | 198,086 | | 1968 | 193,581 | | 1967 | 188,543 | | 1966 | 183,750 | | 1965 | 178,977 | | 1964 | 173,803 | | 1963 | 168,489 | | 1962 | 163,490 | | 1961 | 158,976 | | 1960 | 155,036 |
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