| Year | Value | | 2022 | 11,519,492 | | 2021 | 11,383,170 | | 2020 | 11,242,817 | | 2019 | 11,094,657 | | 2018 | 10,939,982 | | 2017 | 10,787,396 | | 2016 | 10,627,790 | | 2015 | 10,452,804 | | 2014 | 10,263,161 | | 2013 | 10,086,749 | | 2012 | 9,933,947 | | 2011 | 9,781,923 | | 2010 | 9,629,119 | | 2009 | 9,475,331 | | 2008 | 9,322,821 | | 2007 | 9,172,293 | | 2006 | 9,027,795 | | 2005 | 8,889,630 | | 2004 | 8,750,977 | | 2003 | 8,612,515 | | 2002 | 8,476,132 | | 2001 | 8,344,821 | | 2000 | 8,218,580 | | 1999 | 8,092,667 | | 1998 | 7,966,361 | | 1997 | 7,841,217 | | 1996 | 7,715,671 | | 1995 | 7,587,053 | | 1994 | 7,454,267 | | 1993 | 7,317,374 | | 1992 | 7,178,072 | | 1991 | 7,038,954 | | 1990 | 6,897,519 | | 1989 | 6,755,332 | | 1988 | 6,615,954 | | 1987 | 6,475,177 | | 1986 | 6,358,469 | | 1985 | 6,251,977 | | 1984 | 6,147,291 | | 1983 | 6,054,858 | | 1982 | 6,006,023 | | 1981 | 5,936,564 | | 1980 | 5,800,257 | | 1979 | 5,680,429 | | 1978 | 5,587,339 | | 1977 | 5,499,179 | | 1976 | 5,419,066 | | 1975 | 5,378,514 | | 1974 | 5,339,904 | | 1973 | 5,296,327 | | 1972 | 5,248,261 | | 1971 | 5,196,903 | | 1970 | 5,142,871 | | 1969 | 5,055,576 | | 1968 | 4,970,685 | | 1967 | 4,888,219 | | 1966 | 4,807,946 | | 1965 | 4,729,599 | | 1964 | 4,653,047 | | 1963 | 4,578,268 | | 1962 | 4,505,189 | | 1961 | 4,446,928 | | 1960 | 4,404,367 |
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