| Year | Value | | 2022 | 6,668,226 | | 2021 | 6,516,964 | | 2020 | 6,384,612 | | 2019 | 6,271,668 | | 2018 | 6,181,548 | | 2017 | 6,097,531 | | 2016 | 6,007,310 | | 2015 | 5,912,864 | | 2014 | 5,805,960 | | 2013 | 5,680,471 | | 2012 | 5,539,956 | | 2011 | 5,387,758 | | 2010 | 5,226,574 | | 2009 | 5,058,943 | | 2008 | 4,882,465 | | 2007 | 4,702,998 | | 2006 | 4,529,318 | | 2005 | 4,359,134 | | 2004 | 4,193,578 | | 2003 | 4,041,490 | | 2002 | 3,903,850 | | 2001 | 3,778,204 | | 2000 | 3,666,962 | | 1999 | 3,568,900 | | 1998 | 3,479,343 | | 1997 | 3,395,422 | | 1996 | 3,314,355 | | 1995 | 3,234,377 | | 1994 | 3,153,726 | | 1993 | 3,073,336 | | 1992 | 2,995,156 | | 1991 | 2,920,604 | | 1990 | 2,847,864 | | 1989 | 2,775,612 | | 1988 | 2,705,843 | | 1987 | 2,638,110 | | 1986 | 2,573,570 | | 1985 | 2,511,126 | | 1984 | 2,433,966 | | 1983 | 2,362,617 | | 1982 | 2,311,029 | | 1981 | 2,261,671 | | 1980 | 2,214,704 | | 1979 | 2,184,773 | | 1978 | 2,162,126 | | 1977 | 2,120,644 | | 1976 | 2,070,231 | | 1975 | 2,019,023 | | 1974 | 1,969,901 | | 1973 | 1,926,491 | | 1972 | 1,887,966 | | 1971 | 1,851,814 | | 1970 | 1,814,707 | | 1969 | 1,775,979 | | 1968 | 1,736,883 | | 1967 | 1,697,565 | | 1966 | 1,659,872 | | 1965 | 1,623,883 | | 1964 | 1,589,054 | | 1963 | 1,555,486 | | 1962 | 1,523,106 | | 1961 | 1,491,946 | | 1960 | 1,462,375 |
|