Year | Value | 2022 | 22,862,237 | 2021 | 22,497,244 | 2020 | 22,132,899 | 2019 | 21,756,903 | 2018 | 21,362,603 | 2017 | 20,961,313 | 2016 | 20,556,314 | 2015 | 20,152,232 | 2014 | 19,755,734 | 2013 | 19,371,095 | 2012 | 18,995,990 | 2011 | 18,632,179 | 2010 | 18,282,636 | 2009 | 17,946,941 | 2008 | 17,628,560 | 2007 | 17,330,466 | 2006 | 17,050,923 | 2005 | 16,806,416 | 2004 | 16,578,139 | 2003 | 16,346,159 | 2002 | 16,126,874 | 2001 | 15,912,853 | 2000 | 15,698,203 | 1999 | 15,482,799 | 1998 | 15,272,209 | 1997 | 15,025,934 | 1996 | 14,736,488 | 1995 | 14,462,522 | 1994 | 14,191,896 | 1993 | 13,898,591 | 1992 | 13,592,789 | 1991 | 13,282,430 | 1990 | 12,970,400 | 1989 | 12,651,234 | 1988 | 12,322,605 | 1987 | 11,989,452 | 1986 | 11,634,586 | 1985 | 11,257,214 | 1984 | 10,884,956 | 1983 | 10,527,322 | 1982 | 10,185,106 | 1981 | 9,859,599 | 1980 | 9,552,367 | 1979 | 9,264,854 | 1978 | 8,996,184 | 1977 | 8,745,371 | 1976 | 8,425,545 | 1975 | 8,034,349 | 1974 | 7,746,261 | 1973 | 7,559,395 | 1972 | 7,382,470 | 1971 | 7,214,230 | 1970 | 7,053,525 | 1969 | 6,897,626 | 1968 | 6,744,222 | 1967 | 6,594,125 | 1966 | 6,449,477 | 1965 | 6,319,873 | 1964 | 6,193,711 | 1963 | 6,066,402 | 1962 | 5,954,588 | 1961 | 5,851,587 | 1960 | 5,746,360 |
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