Year | Value | 2022 | 26,795,765 | 2021 | 27,182,995 | 2020 | 27,559,886 | 2019 | 27,904,512 | 2018 | 28,227,475 | 2017 | 28,546,414 | 2016 | 28,873,460 | 2015 | 29,198,282 | 2014 | 29,517,926 | 2013 | 29,836,667 | 2012 | 30,150,639 | 2011 | 30,459,099 | 2010 | 30,758,775 | 2009 | 31,037,220 | 2008 | 31,311,178 | 2007 | 31,577,815 | 2006 | 31,829,502 | 2005 | 32,065,630 | 2004 | 32,287,566 | 2003 | 32,502,533 | 2002 | 32,702,375 | 2001 | 32,874,746 | 2000 | 33,078,329 | 1999 | 33,836,764 | 1998 | 34,582,538 | 1997 | 35,313,906 | 1996 | 36,026,735 | 1995 | 36,611,082 | 1994 | 37,181,660 | 1993 | 37,739,032 | 1992 | 38,282,998 | 1991 | 38,809,454 | 1990 | 39,301,227 | 1989 | 39,755,196 | 1988 | 40,174,344 | 1987 | 40,561,570 | 1986 | 40,911,314 | 1985 | 41,223,715 | 1984 | 41,492,131 | 1983 | 41,726,771 | 1982 | 41,925,951 | 1981 | 42,094,019 | 1980 | 42,228,624 | 1979 | 42,342,874 | 1978 | 42,436,669 | 1977 | 42,512,111 | 1976 | 42,572,652 | 1975 | 42,622,559 | 1974 | 42,651,680 | 1973 | 42,653,748 | 1972 | 42,624,091 | 1971 | 42,574,196 | 1970 | 42,490,442 | 1969 | 42,356,572 | 1968 | 42,190,751 | 1967 | 41,988,198 | 1966 | 41,736,139 | 1965 | 41,434,325 | 1964 | 41,082,862 | 1963 | 40,694,599 | 1962 | 40,274,770 | 1961 | 39,833,002 | 1960 | 39,368,360 |
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