Year | Value | 2022 | 28,219,073 | 2021 | 27,129,015 | 2020 | 26,042,318 | 2019 | 24,998,171 | 2018 | 24,039,069 | 2017 | 23,184,485 | 2016 | 22,440,687 | 2015 | 21,778,521 | 2014 | 21,174,291 | 2013 | 20,615,057 | 2012 | 20,072,307 | 2011 | 19,533,257 | 2010 | 18,996,964 | 2009 | 18,464,748 | 2008 | 17,940,421 | 2007 | 17,428,504 | 2006 | 16,930,707 | 2005 | 16,446,787 | 2004 | 15,974,060 | 2003 | 15,512,438 | 2002 | 15,059,735 | 2001 | 14,617,267 | 2000 | 14,194,344 | 1999 | 13,793,045 | 1998 | 13,411,914 | 1997 | 13,054,126 | 1996 | 12,714,823 | 1995 | 12,367,823 | 1994 | 11,987,746 | 1993 | 11,602,967 | 1992 | 11,267,914 | 1991 | 10,978,448 | 1990 | 10,700,899 | 1989 | 10,446,544 | 1988 | 10,215,175 | 1987 | 9,956,196 | 1986 | 9,666,657 | 1985 | 9,372,826 | 1984 | 9,094,488 | 1983 | 8,849,611 | 1982 | 8,625,614 | 1981 | 8,414,038 | 1980 | 8,222,277 | 1979 | 8,049,123 | 1978 | 7,879,391 | 1977 | 7,720,049 | 1976 | 7,568,276 | 1975 | 7,411,410 | 1974 | 7,253,554 | 1973 | 7,093,245 | 1972 | 6,933,954 | 1971 | 6,774,945 | 1970 | 6,613,710 | 1969 | 6,457,711 | 1968 | 6,309,088 | 1967 | 6,165,777 | 1966 | 6,028,625 | 1965 | 5,896,270 | 1964 | 5,767,890 | 1963 | 5,642,164 | 1962 | 5,517,575 | 1961 | 5,394,468 | 1960 | 5,272,819 |
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