Year | Value | 2022 | 14,004,777 | 2021 | 14,479,675 | 2020 | 14,853,243 | 2019 | 15,187,593 | 2018 | 15,369,250 | 2017 | 15,459,097 | 2016 | 15,454,645 | 2015 | 15,333,228 | 2014 | 15,197,069 | 2013 | 15,052,518 | 2012 | 14,819,509 | 2011 | 14,549,136 | 2010 | 14,266,717 | 2009 | 13,994,966 | 2008 | 13,644,777 | 2007 | 13,196,798 | 2006 | 12,675,633 | 2005 | 11,798,600 | 2004 | 10,578,541 | 2003 | 9,428,597 | 2002 | 8,639,231 | 2001 | 8,410,566 | 2000 | 8,882,642 | 1999 | 9,887,534 | 1998 | 11,119,647 | 1997 | 12,268,196 | 1996 | 12,879,608 | 1995 | 12,930,297 | 1994 | 12,564,947 | 1993 | 11,888,275 | 1992 | 11,284,126 | 1991 | 10,954,575 | 1990 | 10,974,517 | 1989 | 11,360,776 | 1988 | 11,939,887 | 1987 | 12,381,021 | 1986 | 12,635,112 | 1985 | 12,714,797 | 1984 | 12,571,684 | 1983 | 12,267,840 | 1982 | 11,813,001 | 1981 | 11,201,199 | 1980 | 10,461,227 | 1979 | 9,718,410 | 1978 | 9,041,253 | 1977 | 8,329,842 | 1976 | 7,726,908 | 1975 | 7,514,789 | 1974 | 7,718,551 | 1973 | 8,104,635 | 1972 | 8,698,875 | 1971 | 9,423,378 | 1970 | 9,881,440 | 1969 | 9,933,311 | 1968 | 9,761,220 | 1967 | 9,508,256 | 1966 | 9,234,682 | 1965 | 8,966,187 | 1964 | 8,689,824 | 1963 | 8,509,818 | 1962 | 8,367,005 | 1961 | 8,170,991 | 1960 | 8,070,632 |
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