Year | Value | 2022 | 16,421,361 | 2021 | 16,238,888 | 2020 | 16,132,081 | 2019 | 16,089,260 | 2018 | 16,103,964 | 2017 | 16,208,787 | 2016 | 16,384,746 | 2015 | 16,610,188 | 2014 | 16,875,000 | 2013 | 17,097,801 | 2012 | 17,244,368 | 2011 | 17,363,137 | 2010 | 17,419,162 | 2009 | 17,374,420 | 2008 | 17,264,326 | 2007 | 17,035,952 | 2006 | 16,666,459 | 2005 | 16,225,882 | 2004 | 15,744,093 | 2003 | 15,217,145 | 2002 | 14,699,506 | 2001 | 14,175,574 | 2000 | 13,611,716 | 1999 | 13,058,420 | 1998 | 12,548,659 | 1997 | 12,091,496 | 1996 | 11,696,147 | 1995 | 11,367,098 | 1994 | 11,083,836 | 1993 | 10,886,356 | 1992 | 10,706,038 | 1991 | 10,454,913 | 1990 | 10,131,449 | 1989 | 9,724,530 | 1988 | 9,462,994 | 1987 | 9,206,917 | 1986 | 8,931,575 | 1985 | 8,641,620 | 1984 | 8,354,261 | 1983 | 8,062,266 | 1982 | 7,771,998 | 1981 | 7,469,337 | 1980 | 7,196,357 | 1979 | 6,977,739 | 1978 | 6,791,259 | 1977 | 6,611,611 | 1976 | 6,389,306 | 1975 | 6,151,443 | 1974 | 5,925,596 | 1973 | 5,694,712 | 1972 | 5,463,205 | 1971 | 5,242,874 | 1970 | 5,025,471 | 1969 | 4,801,346 | 1968 | 4,586,090 | 1967 | 4,392,056 | 1966 | 4,218,501 | 1965 | 4,077,276 | 1964 | 3,973,179 | 1963 | 3,903,916 | 1962 | 3,863,906 | 1961 | 3,839,972 | 1960 | 3,822,421 |
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