| Year | Value | | 2022 | 6,217,985 | | 2021 | 6,062,373 | | 2020 | 5,906,960 | | 2019 | 5,749,232 | | 2018 | 5,591,326 | | 2017 | 5,435,026 | | 2016 | 5,280,355 | | 2015 | 5,127,314 | | 2014 | 4,975,954 | | 2013 | 4,826,031 | | 2012 | 4,677,715 | | 2011 | 4,530,522 | | 2010 | 4,384,767 | | 2009 | 4,240,048 | | 2008 | 4,096,745 | | 2007 | 3,954,703 | | 2006 | 3,814,124 | | 2005 | 3,675,267 | | 2004 | 3,538,645 | | 2003 | 3,404,113 | | 2002 | 3,271,979 | | 2001 | 3,142,954 | | 2000 | 3,026,014 | | 1999 | 2,911,705 | | 1998 | 2,803,955 | | 1997 | 2,699,969 | | 1996 | 2,596,333 | | 1995 | 2,496,088 | | 1994 | 2,399,162 | | 1993 | 2,305,540 | | 1992 | 2,215,302 | | 1991 | 2,128,281 | | 1990 | 2,044,538 | | 1989 | 1,963,947 | | 1988 | 1,886,447 | | 1987 | 1,807,515 | | 1986 | 1,730,321 | | 1985 | 1,655,696 | | 1984 | 1,583,516 | | 1983 | 1,513,477 | | 1982 | 1,445,794 | | 1981 | 1,380,454 | | 1980 | 1,317,385 | | 1979 | 1,256,648 | | 1978 | 1,198,320 | | 1977 | 1,142,453 | | 1976 | 1,088,917 | | 1975 | 1,037,677 | | 1974 | 990,237 | | 1973 | 942,349 | | 1972 | 894,078 | | 1971 | 847,891 | | 1970 | 804,271 | | 1969 | 762,978 | | 1968 | 723,838 | | 1967 | 686,678 | | 1966 | 651,418 | | 1965 | 617,787 | | 1964 | 585,817 | | 1963 | 555,384 | | 1962 | 526,482 | | 1961 | 498,988 | | 1960 | 472,823 |
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