| Year | Value | | 2022 | 6,765,919 | | 2021 | 6,640,580 | | 2020 | 6,504,054 | | 2019 | 6,361,781 | | 2018 | 6,217,854 | | 2017 | 6,064,155 | | 2016 | 5,903,719 | | 2015 | 5,744,857 | | 2014 | 5,583,121 | | 2013 | 5,418,395 | | 2012 | 5,250,232 | | 2011 | 5,082,420 | | 2010 | 4,919,333 | | 2009 | 4,756,153 | | 2008 | 4,599,599 | | 2007 | 4,452,848 | | 2006 | 4,299,228 | | 2005 | 4,133,414 | | 2004 | 3,962,020 | | 2003 | 3,779,588 | | 2002 | 3,597,716 | | 2001 | 3,440,422 | | 2000 | 3,318,063 | | 1999 | 3,222,786 | | 1998 | 3,146,497 | | 1997 | 3,076,174 | | 1996 | 2,995,742 | | 1995 | 2,902,105 | | 1994 | 2,801,487 | | 1993 | 2,702,965 | | 1992 | 2,611,559 | | 1991 | 2,514,101 | | 1990 | 2,423,965 | | 1989 | 2,357,047 | | 1988 | 2,292,754 | | 1987 | 2,226,535 | | 1986 | 2,160,686 | | 1985 | 2,093,333 | | 1984 | 2,023,647 | | 1983 | 1,955,582 | | 1982 | 1,889,428 | | 1981 | 1,810,912 | | 1980 | 1,760,182 | | 1979 | 1,743,374 | | 1978 | 1,705,720 | | 1977 | 1,655,818 | | 1976 | 1,600,882 | | 1975 | 1,543,024 | | 1974 | 1,493,985 | | 1973 | 1,454,716 | | 1972 | 1,429,357 | | 1971 | 1,412,226 | | 1970 | 1,393,371 | | 1969 | 1,369,944 | | 1968 | 1,345,978 | | 1967 | 1,326,570 | | 1966 | 1,310,209 | | 1965 | 1,292,079 | | 1964 | 1,271,756 | | 1963 | 1,247,650 | | 1962 | 1,215,562 | | 1961 | 1,178,028 | | 1960 | 1,141,055 |
|