Year | Value | 2022 | 601,625 | 2021 | 582,947 | 2020 | 576,198 | 2019 | 569,013 | 2018 | 561,091 | 2017 | 552,854 | 2016 | 545,734 | 2015 | 541,944 | 2014 | 542,685 | 2013 | 548,252 | 2012 | 558,395 | 2011 | 570,854 | 2010 | 582,005 | 2009 | 589,150 | 2008 | 586,267 | 2007 | 575,803 | 2006 | 562,203 | 2005 | 544,588 | 2004 | 525,915 | 2003 | 507,675 | 2002 | 492,311 | 2001 | 481,266 | 2000 | 472,730 | 1999 | 463,396 | 1998 | 454,606 | 1997 | 444,036 | 1996 | 420,623 | 1995 | 387,110 | 1994 | 352,008 | 1993 | 317,996 | 1992 | 295,257 | 1991 | 296,392 | 1990 | 321,346 | 1989 | 364,788 | 1988 | 423,493 | 1987 | 465,519 | 1986 | 496,037 | 1985 | 505,993 | 1984 | 490,138 | 1983 | 451,845 | 1982 | 402,878 | 1981 | 361,898 | 1980 | 342,129 | 1979 | 343,288 | 1978 | 363,169 | 1977 | 393,805 | 1976 | 417,778 | 1975 | 424,561 | 1974 | 414,985 | 1973 | 392,830 | 1972 | 361,691 | 1971 | 328,015 | 1970 | 297,901 | 1969 | 271,941 | 1968 | 248,444 | 1967 | 230,492 | 1966 | 219,153 | 1965 | 214,571 | 1964 | 217,417 | 1963 | 229,033 | 1962 | 245,578 | 1961 | 258,870 | 1960 | 264,046 |
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