Year | Value | 2022 | 11,837,722 | 2021 | 11,967,589 | 2020 | 12,153,172 | 2019 | 12,327,255 | 2018 | 12,516,795 | 2017 | 12,677,251 | 2016 | 12,810,144 | 2015 | 12,916,496 | 2014 | 13,019,308 | 2013 | 13,078,958 | 2012 | 13,058,548 | 2011 | 12,992,581 | 2010 | 12,944,067 | 2009 | 12,767,155 | 2008 | 12,539,390 | 2007 | 12,307,685 | 2006 | 12,079,560 | 2005 | 11,850,767 | 2004 | 11,624,100 | 2003 | 11,406,091 | 2002 | 11,220,684 | 2001 | 11,066,319 | 2000 | 10,952,225 | 1999 | 10,881,895 | 1998 | 10,852,989 | 1997 | 10,820,851 | 1996 | 10,723,855 | 1995 | 10,442,979 | 1994 | 10,077,640 | 1993 | 9,773,791 | 1992 | 9,448,466 | 1991 | 9,195,974 | 1990 | 9,234,010 | 1989 | 9,415,008 | 1988 | 9,504,716 | 1987 | 9,599,387 | 1986 | 9,685,083 | 1985 | 9,671,620 | 1984 | 9,593,397 | 1983 | 9,496,049 | 1982 | 9,413,570 | 1981 | 9,362,943 | 1980 | 9,344,113 | 1979 | 9,342,455 | 1978 | 9,380,715 | 1977 | 9,442,780 | 1976 | 9,482,366 | 1975 | 9,494,127 | 1974 | 9,500,931 | 1973 | 9,521,834 | 1972 | 9,563,176 | 1971 | 9,630,503 | 1970 | 9,707,015 | 1969 | 9,537,068 | 1968 | 8,974,579 | 1967 | 8,253,548 | 1966 | 7,534,780 | 1965 | 6,954,064 | 1964 | 6,898,892 | 1963 | 7,406,620 | 1962 | 8,086,983 | 1961 | 8,717,889 | 1960 | 9,175,751 |
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