Year | Value | 2022 | 22,491,671 | 2021 | 22,182,436 | 2020 | 22,120,168 | 2019 | 21,819,366 | 2018 | 21,471,397 | 2017 | 21,126,017 | 2016 | 20,755,798 | 2015 | 20,410,546 | 2014 | 20,095,657 | 2013 | 19,775,013 | 2012 | 19,414,834 | 2011 | 19,056,040 | 2010 | 18,767,085 | 2009 | 18,451,571 | 2008 | 18,049,707 | 2007 | 17,666,406 | 2006 | 17,321,968 | 2005 | 17,065,978 | 2004 | 16,835,775 | 2003 | 16,633,061 | 2002 | 16,419,256 | 2001 | 16,210,024 | 2000 | 16,028,911 | 1999 | 15,871,907 | 1998 | 15,723,967 | 1997 | 15,592,522 | 1996 | 15,448,588 | 1995 | 15,285,785 | 1994 | 15,139,633 | 1993 | 15,017,273 | 1992 | 14,906,654 | 1991 | 14,761,085 | 1990 | 14,579,251 | 1989 | 14,370,104 | 1988 | 14,133,843 | 1987 | 13,909,190 | 1986 | 13,704,019 | 1985 | 13,511,953 | 1984 | 13,337,672 | 1983 | 13,183,123 | 1982 | 13,008,344 | 1981 | 12,789,234 | 1980 | 12,569,300 | 1979 | 12,395,391 | 1978 | 12,240,482 | 1977 | 12,077,392 | 1976 | 11,920,613 | 1975 | 11,780,153 | 1974 | 11,614,598 | 1973 | 11,303,156 | 1972 | 11,110,846 | 1971 | 10,887,779 | 1970 | 10,505,755 | 1969 | 10,280,809 | 1968 | 10,048,170 | 1967 | 9,852,991 | 1966 | 9,709,943 | 1965 | 9,459,784 | 1964 | 9,245,383 | 1963 | 9,034,955 | 1962 | 8,832,932 | 1961 | 8,589,875 | 1960 | 8,378,309 |
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