Year | Value | 2022 | 33,938,221 | 2021 | 33,573,874 | 2020 | 33,199,993 | 2019 | 32,804,020 | 2018 | 32,399,271 | 2017 | 31,975,806 | 2016 | 31,526,418 | 2015 | 31,068,833 | 2014 | 30,606,459 | 2013 | 30,134,807 | 2012 | 29,660,212 | 2011 | 29,184,133 | 2010 | 28,717,731 | 2009 | 28,217,204 | 2008 | 27,664,296 | 2007 | 27,092,604 | 2006 | 26,509,413 | 2005 | 25,923,536 | 2004 | 25,333,247 | 2003 | 24,739,411 | 2002 | 24,142,445 | 2001 | 23,542,517 | 2000 | 22,945,150 | 1999 | 22,368,655 | 1998 | 21,810,542 | 1997 | 21,249,178 | 1996 | 20,689,051 | 1995 | 20,136,888 | 1994 | 19,588,703 | 1993 | 19,050,077 | 1992 | 18,526,708 | 1991 | 18,017,464 | 1990 | 17,517,054 | 1989 | 17,020,143 | 1988 | 16,524,616 | 1987 | 16,033,103 | 1986 | 15,558,740 | 1985 | 15,108,135 | 1984 | 14,686,454 | 1983 | 14,292,862 | 1982 | 13,921,029 | 1981 | 13,564,594 | 1980 | 13,215,707 | 1979 | 12,875,011 | 1978 | 12,543,892 | 1977 | 12,218,924 | 1976 | 11,910,081 | 1975 | 11,617,947 | 1974 | 11,335,187 | 1973 | 11,062,664 | 1972 | 10,801,619 | 1971 | 10,552,557 | 1970 | 10,306,508 | 1969 | 10,061,684 | 1968 | 9,821,308 | 1967 | 9,582,086 | 1966 | 9,340,240 | 1965 | 9,091,016 | 1964 | 8,835,925 | 1963 | 8,579,350 | 1962 | 8,324,218 | 1961 | 8,074,805 | 1960 | 7,833,782 |
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