| Year | Value | | 2022 | 7,014,163 | | 2021 | 6,926,780 | | 2020 | 6,827,994 | | 2019 | 6,764,658 | | 2018 | 6,706,183 | | 2017 | 6,659,350 | | 2016 | 6,617,169 | | 2015 | 6,578,828 | | 2014 | 6,546,012 | | 2013 | 6,520,333 | | 2012 | 6,494,283 | | 2011 | 6,457,743 | | 2010 | 6,403,809 | | 2009 | 6,337,144 | | 2008 | 6,267,228 | | 2007 | 6,193,886 | | 2006 | 6,117,343 | | 2005 | 6,041,725 | | 2004 | 5,966,051 | | 2003 | 5,886,957 | | 2002 | 5,800,192 | | 2001 | 5,704,057 | | 2000 | 5,597,602 | | 1999 | 5,491,367 | | 1998 | 5,393,642 | | 1997 | 5,299,934 | | 1996 | 5,210,104 | | 1995 | 5,124,278 | | 1994 | 5,040,624 | | 1993 | 4,961,312 | | 1992 | 4,889,660 | | 1991 | 4,827,626 | | 1990 | 4,783,459 | | 1989 | 4,741,470 | | 1988 | 4,695,891 | | 1987 | 4,648,117 | | 1986 | 4,596,999 | | 1985 | 4,540,496 | | 1984 | 4,476,013 | | 1983 | 4,407,052 | | 1982 | 4,335,210 | | 1981 | 4,257,857 | | 1980 | 4,178,517 | | 1979 | 4,094,541 | | 1978 | 4,012,458 | | 1977 | 3,931,481 | | 1976 | 3,852,629 | | 1975 | 3,708,226 | | 1974 | 3,535,188 | | 1973 | 3,451,945 | | 1972 | 3,416,874 | | 1971 | 3,388,093 | | 1970 | 3,368,354 | | 1969 | 3,364,185 | | 1968 | 3,360,136 | | 1967 | 3,340,014 | | 1966 | 3,326,794 | | 1965 | 3,317,422 | | 1964 | 3,296,372 | | 1963 | 3,260,048 | | 1962 | 3,212,831 | | 1961 | 3,155,977 | | 1960 | 3,096,215 |
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