Year | Value | 2022 | 17,809,564 | 2021 | 17,446,107 | 2020 | 17,107,641 | 2019 | 16,783,206 | 2018 | 16,470,365 | 2017 | 16,186,297 | 2016 | 15,916,811 | 2015 | 15,645,110 | 2014 | 15,377,752 | 2013 | 15,123,261 | 2012 | 14,892,274 | 2011 | 14,678,761 | 2010 | 14,294,052 | 2009 | 13,899,688 | 2008 | 13,669,723 | 2007 | 13,453,551 | 2006 | 13,264,039 | 2005 | 13,102,791 | 2004 | 12,948,519 | 2003 | 12,795,643 | 2002 | 12,643,062 | 2001 | 12,484,420 | 2000 | 12,321,034 | 1999 | 12,144,366 | 1998 | 12,008,083 | 1997 | 11,811,592 | 1996 | 11,586,810 | 1995 | 11,364,153 | 1994 | 11,159,106 | 1993 | 10,941,964 | 1992 | 10,699,574 | 1991 | 10,458,555 | 1990 | 10,245,281 | 1989 | 10,049,302 | 1988 | 9,805,371 | 1987 | 9,551,705 | 1986 | 9,301,153 | 1985 | 9,060,647 | 1984 | 8,833,642 | 1983 | 8,619,956 | 1982 | 8,418,111 | 1981 | 8,224,463 | 1980 | 8,036,193 | 1979 | 7,847,485 | 1978 | 7,650,106 | 1977 | 7,443,574 | 1976 | 7,236,020 | 1975 | 7,034,262 | 1974 | 6,839,159 | 1973 | 6,650,265 | 1972 | 6,467,011 | 1971 | 6,288,947 | 1970 | 6,112,815 | 1969 | 5,930,780 | 1968 | 5,743,370 | 1967 | 5,555,948 | 1966 | 5,370,234 | 1965 | 5,185,502 | 1964 | 5,001,917 | 1963 | 4,822,083 | 1962 | 4,645,815 | 1961 | 4,474,667 | 1960 | 4,316,573 |
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