Year | Value | 2022 | 38,929,902 | 2021 | 38,226,498 | 2020 | 38,007,166 | 2019 | 37,601,230 | 2018 | 37,065,084 | 2017 | 36,545,236 | 2016 | 36,109,487 | 2015 | 35,702,908 | 2014 | 35,437,435 | 2013 | 35,082,954 | 2012 | 34,714,222 | 2011 | 34,339,328 | 2010 | 34,004,889 | 2009 | 33,628,895 | 2008 | 33,247,118 | 2007 | 32,889,025 | 2006 | 32,571,174 | 2005 | 32,243,753 | 2004 | 31,940,655 | 2003 | 31,644,028 | 2002 | 31,360,079 | 2001 | 31,020,902 | 2000 | 30,685,730 | 1999 | 30,401,286 | 1998 | 30,155,173 | 1997 | 29,905,948 | 1996 | 29,610,218 | 1995 | 29,302,311 | 1994 | 29,000,663 | 1993 | 28,684,764 | 1992 | 28,371,264 | 1991 | 28,037,420 | 1990 | 27,691,138 | 1989 | 27,276,781 | 1988 | 26,791,747 | 1987 | 26,446,601 | 1986 | 26,100,278 | 1985 | 25,842,116 | 1984 | 25,607,053 | 1983 | 25,366,451 | 1982 | 25,116,942 | 1981 | 24,819,915 | 1980 | 24,515,667 | 1979 | 24,201,544 | 1978 | 23,963,203 | 1977 | 23,725,843 | 1976 | 23,449,808 | 1975 | 23,143,275 | 1974 | 22,807,969 | 1973 | 22,491,777 | 1972 | 22,218,463 | 1971 | 21,962,032 | 1970 | 21,324,000 | 1969 | 21,028,000 | 1968 | 20,744,000 | 1967 | 20,412,000 | 1966 | 20,048,000 | 1965 | 19,678,000 | 1964 | 19,325,000 | 1963 | 18,964,000 | 1962 | 18,614,000 | 1961 | 18,271,000 | 1960 | 17,909,356 |
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