| Year | Value | | 2022 | 10,948,041 | | 2021 | 10,803,684 | | 2020 | 10,561,773 | | 2019 | 10,342,771 | | 2018 | 10,051,391 | | 2017 | 9,703,124 | | 2016 | 9,315,883 | | 2015 | 8,672,855 | | 2014 | 7,739,385 | | 2013 | 6,837,770 | | 2012 | 6,212,355 | | 2011 | 6,023,077 | | 2010 | 6,381,192 | | 2009 | 7,169,560 | | 2008 | 8,161,690 | | 2007 | 9,088,321 | | 2006 | 9,557,386 | | 2005 | 9,538,908 | | 2004 | 9,178,711 | | 2003 | 8,564,788 | | 2002 | 7,997,726 | | 2001 | 7,666,351 | | 2000 | 7,659,804 | | 1999 | 7,964,765 | | 1998 | 8,460,441 | | 1997 | 8,864,301 | | 1996 | 9,111,530 | | 1995 | 9,215,872 | | 1994 | 9,151,335 | | 1993 | 8,935,621 | | 1992 | 8,551,536 | | 1991 | 8,032,695 | | 1990 | 7,427,224 | | 1989 | 6,851,281 | | 1988 | 6,360,177 | | 1987 | 5,922,799 | | 1986 | 5,583,666 | | 1985 | 5,496,014 | | 1984 | 5,681,140 | | 1983 | 5,945,869 | | 1982 | 6,360,221 | | 1981 | 6,877,163 | | 1980 | 7,199,348 | | 1979 | 7,244,557 | | 1978 | 7,125,866 | | 1977 | 6,943,196 | | 1976 | 6,718,134 | | 1975 | 6,532,210 | | 1974 | 6,364,264 | | 1973 | 6,222,879 | | 1972 | 6,095,658 | | 1971 | 5,956,968 | | 1970 | 5,822,152 | | 1969 | 5,643,845 | | 1968 | 5,384,179 | | 1967 | 5,095,617 | | 1966 | 4,861,610 | | 1965 | 4,596,725 | | 1964 | 4,346,900 | | 1963 | 4,190,702 | | 1962 | 4,065,325 | | 1961 | 3,951,991 | | 1960 | 3,824,319 |
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