Year | Value | 2022 | 523,046 | 2021 | 512,962 | 2020 | 505,934 | 2019 | 501,675 | 2018 | 500,859 | 2017 | 505,541 | 2016 | 516,926 | 2015 | 516,474 | 2014 | 501,825 | 2013 | 484,901 | 2012 | 457,994 | 2011 | 420,622 | 2010 | 396,488 | 2009 | 386,202 | 2008 | 374,004 | 2007 | 364,997 | 2006 | 359,415 | 2005 | 353,675 | 2004 | 347,101 | 2003 | 341,689 | 2002 | 339,134 | 2001 | 338,696 | 2000 | 338,799 | 1999 | 339,151 | 1998 | 339,426 | 1997 | 338,515 | 1996 | 336,653 | 1995 | 335,408 | 1994 | 335,354 | 1993 | 337,038 | 1992 | 338,951 | 1991 | 341,026 | 1990 | 343,444 | 1989 | 340,129 | 1988 | 329,354 | 1987 | 318,704 | 1986 | 309,428 | 1985 | 298,806 | 1984 | 294,547 | 1983 | 298,068 | 1982 | 300,873 | 1981 | 300,701 | 1980 | 299,005 | 1979 | 296,688 | 1978 | 293,308 | 1977 | 289,793 | 1976 | 287,443 | 1975 | 285,229 | 1974 | 281,291 | 1973 | 276,714 | 1972 | 272,303 | 1971 | 267,822 | 1970 | 262,152 | 1969 | 255,745 | 1968 | 249,754 | 1967 | 244,053 | 1966 | 238,555 | 1965 | 233,504 | 1964 | 228,470 | 1963 | 223,802 | 1962 | 218,035 | 1961 | 211,032 | 1960 | 204,544 |
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