| Year | Value | | 2022 | 2,813,868 | | 2021 | 2,730,335 | | 2020 | 2,650,072 | | 2019 | 2,573,157 | | 2018 | 2,500,972 | | 2017 | 2,431,748 | | 2016 | 2,365,002 | | 2015 | 2,297,862 | | 2014 | 2,232,447 | | 2013 | 2,168,719 | | 2012 | 2,104,489 | | 2011 | 2,015,022 | | 2010 | 1,922,062 | | 2009 | 1,852,759 | | 2008 | 1,781,757 | | 2007 | 1,698,015 | | 2006 | 1,603,166 | | 2005 | 1,504,172 | | 2004 | 1,427,146 | | 2003 | 1,399,465 | | 2002 | 1,377,790 | | 2001 | 1,331,992 | | 2000 | 1,283,482 | | 1999 | 1,227,152 | | 1998 | 1,151,916 | | 1997 | 1,032,064 | | 1996 | 946,912 | | 1995 | 984,657 | | 1994 | 1,040,943 | | 1993 | 1,109,233 | | 1992 | 1,129,334 | | 1991 | 1,124,757 | | 1990 | 1,224,677 | | 1989 | 1,324,364 | | 1988 | 1,224,577 | | 1987 | 1,128,503 | | 1986 | 1,036,622 | | 1985 | 949,038 | | 1984 | 866,068 | | 1983 | 805,569 | | 1982 | 761,155 | | 1981 | 719,532 | | 1980 | 679,486 | | 1979 | 641,087 | | 1978 | 604,690 | | 1977 | 570,245 | | 1976 | 538,074 | | 1975 | 507,875 | | 1974 | 479,266 | | 1973 | 452,351 | | 1972 | 427,056 | | 1971 | 403,345 | | 1970 | 380,892 | | 1969 | 359,421 | | 1968 | 339,124 | | 1967 | 319,910 | | 1966 | 301,771 | | 1965 | 284,600 | | 1964 | 268,336 | | 1963 | 252,962 | | 1962 | 238,447 | | 1961 | 224,741 | | 1960 | 211,851 |
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