Year | Value | 2022 | 12,423,143 | 2021 | 12,344,562 | 2020 | 12,242,644 | 2019 | 12,279,897 | 2018 | 12,404,862 | 2017 | 12,630,055 | 2016 | 12,952,982 | 2015 | 13,300,679 | 2014 | 13,574,185 | 2013 | 13,693,796 | 2012 | 13,697,415 | 2011 | 13,598,112 | 2010 | 13,375,412 | 2009 | 13,164,688 | 2008 | 12,986,158 | 2007 | 12,748,565 | 2006 | 12,497,853 | 2005 | 12,248,856 | 2004 | 12,011,785 | 2003 | 11,696,956 | 2002 | 11,292,501 | 2001 | 10,838,226 | 2000 | 10,095,660 | 1999 | 9,025,252 | 1998 | 7,998,422 | 1997 | 7,309,617 | 1996 | 7,157,635 | 1995 | 7,649,510 | 1994 | 8,639,778 | 1993 | 9,860,898 | 1992 | 10,986,273 | 1991 | 11,544,560 | 1990 | 11,532,205 | 1989 | 11,132,597 | 1988 | 10,429,604 | 1987 | 9,792,740 | 1986 | 9,417,340 | 1985 | 9,394,095 | 1984 | 9,733,765 | 1983 | 10,293,393 | 1982 | 10,760,812 | 1981 | 11,049,246 | 1980 | 11,138,180 | 1979 | 10,998,244 | 1978 | 10,705,620 | 1977 | 10,256,431 | 1976 | 9,658,156 | 1975 | 8,951,680 | 1974 | 8,257,269 | 1973 | 7,668,418 | 1972 | 7,101,029 | 1971 | 6,631,904 | 1970 | 6,486,467 | 1969 | 6,716,600 | 1968 | 7,053,388 | 1967 | 7,531,263 | 1966 | 8,106,140 | 1965 | 8,469,995 | 1964 | 8,489,949 | 1963 | 8,304,064 | 1962 | 8,064,683 | 1961 | 7,827,004 | 1960 | 7,573,490 |
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