Year | Value | 2022 | 43,362,654 | 2021 | 43,141,913 | 2020 | 42,886,887 | 2019 | 42,694,446 | 2018 | 42,611,573 | 2017 | 42,448,434 | 2016 | 42,367,598 | 2015 | 42,203,495 | 2014 | 41,768,264 | 2013 | 41,228,284 | 2012 | 40,710,400 | 2011 | 40,199,437 | 2010 | 39,726,124 | 2009 | 39,171,814 | 2008 | 38,571,753 | 2007 | 37,944,202 | 2006 | 37,518,281 | 2005 | 37,029,761 | 2004 | 36,458,263 | 2003 | 36,208,748 | 2002 | 36,141,207 | 2001 | 35,649,934 | 2000 | 34,546,026 | 1999 | 33,261,419 | 1998 | 31,977,505 | 1997 | 30,611,678 | 1996 | 29,394,808 | 1995 | 28,947,809 | 1994 | 28,842,335 | 1993 | 28,434,457 | 1992 | 27,988,253 | 1991 | 27,706,168 | 1990 | 27,396,453 | 1989 | 27,030,843 | 1988 | 26,770,166 | 1987 | 26,601,435 | 1986 | 26,473,759 | 1985 | 26,500,205 | 1984 | 26,720,784 | 1983 | 26,868,780 | 1982 | 26,860,143 | 1981 | 26,706,891 | 1980 | 26,281,755 | 1979 | 25,618,729 | 1978 | 25,087,987 | 1977 | 24,707,213 | 1976 | 24,254,301 | 1975 | 23,936,602 | 1974 | 23,546,553 | 1973 | 22,519,416 | 1972 | 21,186,581 | 1971 | 20,115,823 | 1970 | 19,223,558 | 1969 | 18,914,847 | 1968 | 19,400,724 | 1967 | 20,257,818 | 1966 | 21,030,480 | 1965 | 21,565,723 | 1964 | 21,794,211 | 1963 | 21,787,181 | 1962 | 21,674,790 | 1961 | 21,448,258 | 1960 | 21,183,926 |
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