Year | Value | 2022 | 24,828,148 | 2021 | 23,830,092 | 2020 | 22,723,860 | 2019 | 21,459,353 | 2018 | 20,382,964 | 2017 | 19,577,518 | 2016 | 18,883,403 | 2015 | 18,319,638 | 2014 | 17,877,905 | 2013 | 17,541,182 | 2012 | 17,276,852 | 2011 | 17,003,581 | 2010 | 16,683,213 | 2009 | 16,322,657 | 2008 | 15,918,638 | 2007 | 15,489,776 | 2006 | 15,088,804 | 2005 | 14,755,815 | 2004 | 14,470,685 | 2003 | 14,208,044 | 2002 | 13,939,916 | 2001 | 13,631,916 | 2000 | 13,276,208 | 1999 | 12,888,755 | 1998 | 12,483,549 | 1997 | 12,059,500 | 1996 | 11,646,058 | 1995 | 11,262,572 | 1994 | 10,906,144 | 1993 | 10,576,063 | 1992 | 10,265,175 | 1991 | 9,969,744 | 1990 | 9,706,295 | 1989 | 9,492,284 | 1988 | 9,311,370 | 1987 | 9,163,405 | 1986 | 9,039,409 | 1985 | 8,911,763 | 1984 | 8,763,339 | 1983 | 8,600,057 | 1982 | 8,434,392 | 1981 | 8,256,952 | 1980 | 8,062,654 | 1979 | 7,856,685 | 1978 | 7,637,944 | 1977 | 7,399,247 | 1976 | 7,150,679 | 1975 | 6,921,639 | 1974 | 6,722,975 | 1973 | 6,549,355 | 1972 | 6,399,893 | 1971 | 6,271,444 | 1970 | 6,131,099 | 1969 | 5,951,938 | 1968 | 5,737,981 | 1967 | 5,507,411 | 1966 | 5,288,135 | 1965 | 5,103,642 | 1964 | 4,958,441 | 1963 | 4,868,244 | 1962 | 4,821,085 | 1961 | 4,767,353 | 1960 | 4,677,326 |
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