Year | Value | 2022 | 590,860 | 2021 | 576,878 | 2020 | 566,004 | 2019 | 555,302 | 2018 | 544,839 | 2017 | 536,923 | 2016 | 529,574 | 2015 | 523,125 | 2014 | 520,082 | 2013 | 521,361 | 2012 | 528,350 | 2011 | 541,720 | 2010 | 541,594 | 2009 | 525,829 | 2008 | 507,235 | 2007 | 478,353 | 2006 | 439,620 | 2005 | 415,389 | 2004 | 405,619 | 2003 | 393,595 | 2002 | 384,174 | 2001 | 377,284 | 2000 | 369,836 | 1999 | 362,079 | 1998 | 356,020 | 1997 | 353,518 | 1996 | 354,039 | 1995 | 355,541 | 1994 | 357,107 | 1993 | 358,052 | 1992 | 357,280 | 1991 | 354,903 | 1990 | 352,602 | 1989 | 351,863 | 1988 | 353,581 | 1987 | 355,557 | 1986 | 357,731 | 1985 | 360,587 | 1984 | 357,497 | 1983 | 346,620 | 1982 | 336,143 | 1981 | 327,014 | 1980 | 315,793 | 1979 | 310,822 | 1978 | 314,194 | 1977 | 317,108 | 1976 | 317,023 | 1975 | 315,376 | 1974 | 313,292 | 1973 | 310,366 | 1972 | 307,280 | 1971 | 305,031 | 1970 | 303,221 | 1969 | 299,881 | 1968 | 295,433 | 1967 | 291,256 | 1966 | 286,867 | 1965 | 280,883 | 1964 | 274,034 | 1963 | 267,596 | 1962 | 261,266 | 1961 | 255,255 | 1960 | 250,183 |
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