Year | Value | 2022 | 31,100,260 | 2021 | 29,076,174 | 2020 | 27,243,402 | 2019 | 25,467,231 | 2018 | 24,006,511 | 2017 | 22,769,350 | 2016 | 21,826,906 | 2015 | 21,183,346 | 2014 | 20,699,701 | 2013 | 20,357,332 | 2012 | 20,146,420 | 2011 | 19,885,061 | 2010 | 19,602,821 | 2009 | 19,413,746 | 2008 | 19,232,986 | 2007 | 18,893,653 | 2006 | 18,398,650 | 2005 | 17,863,179 | 2004 | 17,299,712 | 2003 | 16,661,825 | 2002 | 16,049,663 | 2001 | 15,493,657 | 2000 | 14,939,913 | 1999 | 14,426,162 | 1998 | 13,891,680 | 1997 | 13,306,161 | 1996 | 12,797,555 | 1995 | 12,301,969 | 1994 | 11,730,611 | 1993 | 11,173,810 | 1992 | 10,711,691 | 1991 | 10,305,759 | 1990 | 9,937,218 | 1989 | 9,660,066 | 1988 | 9,464,491 | 1987 | 9,240,262 | 1986 | 8,955,494 | 1985 | 8,650,771 | 1984 | 8,319,550 | 1983 | 7,968,477 | 1982 | 7,655,538 | 1981 | 7,405,235 | 1980 | 7,179,573 | 1979 | 6,938,664 | 1978 | 6,709,749 | 1977 | 6,514,503 | 1976 | 6,316,173 | 1975 | 6,088,859 | 1974 | 5,827,627 | 1973 | 5,540,095 | 1972 | 5,268,147 | 1971 | 5,025,087 | 1970 | 4,819,110 | 1969 | 4,679,183 | 1968 | 4,569,115 | 1967 | 4,451,311 | 1966 | 4,327,416 | 1965 | 4,202,391 | 1964 | 4,110,767 | 1963 | 4,051,473 | 1962 | 3,995,346 | 1961 | 4,006,863 | 1960 | 4,131,265 |
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