| Year | Value | | 2022 | 1,980,767 | | 2021 | 1,947,363 | | 2020 | 1,903,638 | | 2019 | 1,854,395 | | 2018 | 1,798,082 | | 2017 | 1,739,369 | | 2016 | 1,688,691 | | 2015 | 1,647,987 | | 2014 | 1,610,666 | | 2013 | 1,576,483 | | 2012 | 1,547,185 | | 2011 | 1,523,874 | | 2010 | 1,507,601 | | 2009 | 1,498,654 | | 2008 | 1,496,561 | | 2007 | 1,499,107 | | 2006 | 1,502,886 | | 2005 | 1,505,456 | | 2004 | 1,504,807 | | 2003 | 1,498,458 | | 2002 | 1,484,836 | | 2001 | 1,463,906 | | 2000 | 1,436,151 | | 1999 | 1,402,024 | | 1998 | 1,363,220 | | 1997 | 1,321,300 | | 1996 | 1,277,215 | | 1995 | 1,232,173 | | 1994 | 1,186,546 | | 1993 | 1,140,972 | | 1992 | 1,096,158 | | 1991 | 1,052,524 | | 1990 | 1,009,987 | | 1989 | 968,465 | | 1988 | 924,730 | | 1987 | 880,125 | | 1986 | 838,760 | | 1985 | 798,807 | | 1984 | 759,777 | | 1983 | 725,865 | | 1982 | 696,467 | | 1981 | 667,842 | | 1980 | 640,572 | | 1979 | 614,998 | | 1978 | 591,326 | | 1977 | 569,549 | | 1976 | 550,856 | | 1975 | 535,033 | | 1974 | 521,144 | | 1973 | 509,595 | | 1972 | 499,929 | | 1971 | 490,940 | | 1970 | 481,386 | | 1969 | 471,306 | | 1968 | 461,043 | | 1967 | 450,364 | | 1966 | 439,807 | | 1965 | 429,466 | | 1964 | 419,034 | | 1963 | 408,355 | | 1962 | 397,490 | | 1961 | 386,731 | | 1960 | 376,305 |
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