Year | Value | 2022 | 37,430,375 | 2021 | 34,741,059 | 2020 | 32,279,078 | 2019 | 29,944,645 | 2018 | 28,075,754 | 2017 | 26,583,621 | 2016 | 25,474,685 | 2015 | 24,655,045 | 2014 | 24,013,471 | 2013 | 23,527,764 | 2012 | 23,171,284 | 2011 | 22,811,458 | 2010 | 22,523,309 | 2009 | 22,376,238 | 2008 | 22,249,344 | 2007 | 21,963,870 | 2006 | 21,460,062 | 2005 | 20,832,694 | 2004 | 20,160,309 | 2003 | 19,451,316 | 2002 | 18,774,893 | 2001 | 18,151,732 | 2000 | 17,564,662 | 1999 | 17,050,364 | 1998 | 16,507,209 | 1997 | 15,912,187 | 1996 | 15,414,962 | 1995 | 14,929,171 | 1994 | 14,351,167 | 1993 | 13,774,993 | 1992 | 13,304,610 | 1991 | 12,911,487 | 1990 | 12,539,748 | 1989 | 12,226,447 | 1988 | 11,977,305 | 1987 | 11,679,761 | 1986 | 11,304,555 | 1985 | 10,934,952 | 1984 | 10,594,579 | 1983 | 10,270,783 | 1982 | 10,001,203 | 1981 | 9,812,117 | 1980 | 9,647,782 | 1979 | 9,428,376 | 1978 | 9,184,460 | 1977 | 8,966,301 | 1976 | 8,727,913 | 1975 | 8,425,156 | 1974 | 8,064,564 | 1973 | 7,671,521 | 1972 | 7,305,124 | 1971 | 6,980,430 | 1970 | 6,705,209 | 1969 | 6,523,583 | 1968 | 6,396,315 | 1967 | 6,263,059 | 1966 | 6,102,876 | 1965 | 5,913,422 | 1964 | 5,751,273 | 1963 | 5,629,206 | 1962 | 5,514,872 | 1961 | 5,488,166 | 1960 | 5,601,391 |
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