| Year | Value | | 2022 | 6,741,039 | | 2021 | 6,582,239 | | 2020 | 6,423,145 | | 2019 | 6,266,092 | | 2018 | 6,112,819 | | 2017 | 5,960,539 | | 2016 | 5,809,454 | | 2015 | 5,663,777 | | 2014 | 5,524,552 | | 2013 | 5,388,720 | | 2012 | 5,255,735 | | 2011 | 5,123,057 | | 2010 | 4,989,230 | | 2009 | 4,856,381 | | 2008 | 4,725,056 | | 2007 | 4,594,932 | | 2006 | 4,467,349 | | 2005 | 4,344,019 | | 2004 | 4,224,817 | | 2003 | 4,110,419 | | 2002 | 4,014,653 | | 2001 | 3,949,825 | | 2000 | 3,904,282 | | 1999 | 3,865,213 | | 1998 | 3,829,146 | | 1997 | 3,713,175 | | 1996 | 3,250,704 | | 1995 | 2,751,147 | | 1994 | 3,308,544 | | 1993 | 3,927,491 | | 1992 | 3,807,610 | | 1991 | 3,724,724 | | 1990 | 3,644,062 | | 1989 | 3,556,472 | | 1988 | 3,463,454 | | 1987 | 3,355,654 | | 1986 | 3,237,871 | | 1985 | 3,123,305 | | 1984 | 3,019,095 | | 1983 | 2,921,086 | | 1982 | 2,818,389 | | 1981 | 2,713,427 | | 1980 | 2,616,733 | | 1979 | 2,530,646 | | 1978 | 2,454,768 | | 1977 | 2,385,501 | | 1976 | 2,317,807 | | 1975 | 2,251,126 | | 1974 | 2,185,811 | | 1973 | 2,121,711 | | 1972 | 2,059,140 | | 1971 | 1,998,484 | | 1970 | 1,938,390 | | 1969 | 1,878,579 | | 1968 | 1,820,100 | | 1967 | 1,763,312 | | 1966 | 1,710,104 | | 1965 | 1,661,938 | | 1964 | 1,619,013 | | 1963 | 1,582,784 | | 1962 | 1,548,098 | | 1961 | 1,509,920 | | 1960 | 1,469,241 |
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