Year | Value | 2022 | 38,093,461 | 2021 | 37,053,082 | 2020 | 36,010,870 | 2019 | 34,965,035 | 2018 | 33,915,716 | 2017 | 32,801,546 | 2016 | 31,618,830 | 2015 | 30,370,089 | 2014 | 29,098,326 | 2013 | 27,822,096 | 2012 | 26,605,303 | 2011 | 25,498,067 | 2010 | 24,420,254 | 2009 | 23,327,750 | 2008 | 22,258,745 | 2007 | 21,210,566 | 2006 | 20,221,686 | 2005 | 19,237,805 | 2004 | 18,227,770 | 2003 | 17,269,158 | 2002 | 16,390,749 | 2001 | 15,557,331 | 2000 | 14,775,633 | 1999 | 14,117,313 | 1998 | 13,545,574 | 1997 | 12,981,598 | 1996 | 12,423,343 | 1995 | 11,867,656 | 1994 | 11,313,370 | 1993 | 10,762,186 | 1992 | 10,270,404 | 1991 | 9,852,922 | 1990 | 9,453,390 | 1989 | 9,019,057 | 1988 | 8,566,534 | 1987 | 8,144,154 | 1986 | 7,740,346 | 1985 | 7,336,706 | 1984 | 6,934,786 | 1983 | 6,529,625 | 1982 | 6,124,955 | 1981 | 5,739,868 | 1980 | 5,390,382 | 1979 | 5,092,714 | 1978 | 4,826,177 | 1977 | 4,576,504 | 1976 | 4,352,789 | 1975 | 4,139,591 | 1974 | 3,928,740 | 1973 | 3,729,010 | 1972 | 3,547,688 | 1971 | 3,398,260 | 1970 | 3,268,797 | 1969 | 3,144,411 | 1968 | 3,010,452 | 1967 | 2,886,973 | 1966 | 2,787,855 | 1965 | 2,713,538 | 1964 | 2,658,757 | 1963 | 2,605,250 | 1962 | 2,542,178 | 1961 | 2,502,504 | 1960 | 2,516,562 |
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