| Year | Value | | 2022 | 10,734,107 | | 2021 | 10,561,087 | | 2020 | 10,377,044 | | 2019 | 10,142,512 | | 2018 | 10,022,352 | | 2017 | 9,971,595 | | 2016 | 10,055,579 | | 2015 | 10,263,042 | | 2014 | 10,467,438 | | 2013 | 10,610,200 | | 2012 | 10,694,544 | | 2011 | 10,689,848 | | 2010 | 10,664,924 | | 2009 | 10,731,890 | | 2008 | 10,906,580 | | 2007 | 11,101,146 | | 2006 | 11,300,269 | | 2005 | 11,469,307 | | 2004 | 11,541,753 | | 2003 | 11,533,574 | | 2002 | 11,512,507 | | 2001 | 11,451,715 | | 2000 | 11,335,678 | | 1999 | 11,184,594 | | 1998 | 11,004,120 | | 1997 | 10,756,195 | | 1996 | 10,628,120 | | 1995 | 10,394,762 | | 1994 | 9,882,047 | | 1993 | 9,497,508 | | 1992 | 9,355,959 | | 1991 | 9,090,018 | | 1990 | 8,720,749 | | 1989 | 8,524,341 | | 1988 | 8,295,853 | | 1987 | 7,907,362 | | 1986 | 7,418,024 | | 1985 | 7,098,806 | | 1984 | 6,920,096 | | 1983 | 6,670,270 | | 1982 | 6,394,201 | | 1981 | 6,214,740 | | 1980 | 6,082,404 | | 1979 | 5,943,509 | | 1978 | 5,836,902 | | 1977 | 5,778,157 | | 1976 | 5,732,385 | | 1975 | 5,717,050 | | 1974 | 5,813,174 | | 1973 | 5,889,255 | | 1972 | 5,921,044 | | 1971 | 6,034,210 | | 1970 | 6,133,182 | | 1969 | 6,122,343 | | 1968 | 6,263,484 | | 1967 | 6,422,919 | | 1966 | 6,341,422 | | 1965 | 6,313,550 | | 1964 | 6,408,214 | | 1963 | 6,273,024 | | 1962 | 6,036,471 | | 1961 | 5,983,997 | | 1960 | 5,906,118 |
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