| Year | Value | | 2022 | 8,368,139 | | 2021 | 8,274,740 | | 2020 | 8,072,559 | | 2019 | 7,774,012 | | 2018 | 7,511,630 | | 2017 | 7,226,103 | | 2016 | 6,998,502 | | 2015 | 7,004,570 | | 2014 | 7,106,917 | | 2013 | 7,117,059 | | 2012 | 7,133,129 | | 2011 | 7,141,869 | | 2010 | 7,093,047 | | 2009 | 6,952,908 | | 2008 | 6,805,662 | | 2007 | 6,661,397 | | 2006 | 6,543,013 | | 2005 | 6,448,137 | | 2004 | 6,360,351 | | 2003 | 6,300,293 | | 2002 | 6,249,387 | | 2001 | 6,149,122 | | 2000 | 6,004,437 | | 1999 | 5,841,996 | | 1998 | 5,688,247 | | 1997 | 5,558,493 | | 1996 | 5,470,187 | | 1995 | 5,398,870 | | 1994 | 5,230,436 | | 1993 | 4,897,023 | | 1992 | 4,477,930 | | 1991 | 4,047,671 | | 1990 | 3,684,991 | | 1989 | 3,596,423 | | 1988 | 3,812,003 | | 1987 | 4,149,166 | | 1986 | 4,475,442 | | 1985 | 4,712,023 | | 1984 | 4,813,573 | | 1983 | 4,820,831 | | 1982 | 4,791,546 | | 1981 | 4,757,672 | | 1980 | 4,734,005 | | 1979 | 4,690,555 | | 1978 | 4,633,706 | | 1977 | 4,583,342 | | 1976 | 4,541,708 | | 1975 | 4,488,728 | | 1974 | 4,402,735 | | 1973 | 4,287,931 | | 1972 | 4,144,496 | | 1971 | 3,980,594 | | 1970 | 3,807,785 | | 1969 | 3,653,775 | | 1968 | 3,540,681 | | 1967 | 3,445,128 | | 1966 | 3,357,782 | | 1965 | 3,291,519 | | 1964 | 3,254,686 | | 1963 | 3,233,568 | | 1962 | 3,219,935 | | 1961 | 3,196,741 | | 1960 | 3,171,940 |
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