| Year | Value | | 2022 | 14,215,570 | | 2021 | 13,877,714 | | 2020 | 13,547,621 | | 2019 | 13,218,128 | | 2018 | 12,893,352 | | 2017 | 12,572,382 | | 2016 | 12,257,085 | | 2015 | 11,950,528 | | 2014 | 11,652,068 | | 2013 | 11,391,437 | | 2012 | 11,165,128 | | 2011 | 10,944,299 | | 2010 | 10,717,965 | | 2009 | 10,483,883 | | 2008 | 10,254,400 | | 2007 | 10,028,098 | | 2006 | 9,803,630 | | 2005 | 9,579,903 | | 2004 | 9,356,595 | | 2003 | 9,133,271 | | 2002 | 8,909,248 | | 2001 | 8,688,294 | | 2000 | 8,469,483 | | 1999 | 8,247,013 | | 1998 | 8,007,627 | | 1997 | 7,748,685 | | 1996 | 7,488,727 | | 1995 | 7,235,560 | | 1994 | 6,988,958 | | 1993 | 6,747,743 | | 1992 | 6,510,014 | | 1991 | 6,276,619 | | 1990 | 6,048,166 | | 1989 | 5,825,099 | | 1988 | 5,610,976 | | 1987 | 5,417,356 | | 1986 | 5,244,192 | | 1985 | 5,077,350 | | 1984 | 4,911,400 | | 1983 | 4,746,889 | | 1982 | 4,584,815 | | 1981 | 4,425,926 | | 1980 | 4,270,600 | | 1979 | 4,119,419 | | 1978 | 3,972,910 | | 1977 | 3,830,025 | | 1976 | 3,691,129 | | 1975 | 3,540,667 | | 1974 | 3,379,024 | | 1973 | 3,223,930 | | 1972 | 3,075,861 | | 1971 | 2,936,512 | | 1970 | 2,808,143 | | 1969 | 2,691,270 | | 1968 | 2,584,124 | | 1967 | 2,483,409 | | 1966 | 2,386,709 | | 1965 | 2,293,516 | | 1964 | 2,203,695 | | 1963 | 2,117,115 | | 1962 | 2,033,833 | | 1961 | 1,954,831 | | 1960 | 1,881,552 |
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