| Year | Value | | 2022 | 4,521,597 | | 2021 | 4,603,404 | | 2020 | 4,457,166 | | 2019 | 4,203,755 | | 2018 | 3,927,068 | | 2017 | 3,680,098 | | 2016 | 3,602,859 | | 2015 | 3,689,577 | | 2014 | 3,699,301 | | 2013 | 3,595,950 | | 2012 | 3,484,335 | | 2011 | 3,383,948 | | 2010 | 3,308,093 | | 2009 | 3,278,484 | | 2008 | 3,276,203 | | 2007 | 3,241,876 | | 2006 | 3,168,409 | | 2005 | 3,085,481 | | 2004 | 3,012,696 | | 2003 | 2,944,500 | | 2002 | 2,872,130 | | 2001 | 2,801,876 | | 2000 | 2,726,136 | | 1999 | 2,632,433 | | 1998 | 2,507,082 | | 1997 | 2,348,316 | | 1996 | 2,168,578 | | 1995 | 1,999,747 | | 1994 | 1,854,064 | | 1993 | 1,734,828 | | 1992 | 1,657,613 | | 1991 | 1,615,106 | | 1990 | 1,583,292 | | 1989 | 1,569,190 | | 1988 | 1,575,125 | | 1987 | 1,575,343 | | 1986 | 1,561,566 | | 1985 | 1,538,505 | | 1984 | 1,508,650 | | 1983 | 1,473,836 | | 1982 | 1,437,179 | | 1981 | 1,392,018 | | 1980 | 1,340,634 | | 1979 | 1,288,908 | | 1978 | 1,242,017 | | 1977 | 1,202,932 | | 1976 | 1,178,766 | | 1975 | 1,164,742 | | 1974 | 1,142,925 | | 1973 | 1,112,857 | | 1972 | 1,072,110 | | 1971 | 1,024,247 | | 1970 | 971,109 | | 1969 | 936,128 | | 1968 | 900,148 | | 1967 | 864,527 | | 1966 | 830,752 | | 1965 | 801,292 | | 1964 | 779,240 | | 1963 | 763,065 | | 1962 | 746,623 | | 1961 | 725,639 | | 1960 | 701,720 |
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