Year | Value | 2022 | 11,768,650 | 2021 | 11,634,272 | 2020 | 11,662,251 | 2019 | 11,683,166 | 2018 | 11,762,176 | 2017 | 11,893,477 | 2016 | 12,087,028 | 2015 | 12,336,746 | 2014 | 12,612,724 | 2013 | 12,867,985 | 2012 | 13,069,855 | 2011 | 13,230,214 | 2010 | 13,402,606 | 2009 | 13,509,944 | 2008 | 13,583,930 | 2007 | 13,659,114 | 2006 | 13,776,653 | 2005 | 13,931,586 | 2004 | 14,088,002 | 2003 | 14,215,269 | 2002 | 14,309,298 | 2001 | 14,397,844 | 2000 | 14,484,101 | 1999 | 14,592,318 | 1998 | 14,709,078 | 1997 | 14,836,340 | 1996 | 14,998,720 | 1995 | 15,166,211 | 1994 | 15,320,873 | 1993 | 15,500,086 | 1992 | 15,691,619 | 1991 | 15,806,597 | 1990 | 15,859,706 | 1989 | 15,939,582 | 1988 | 15,996,743 | 1987 | 15,969,436 | 1986 | 15,917,176 | 1985 | 15,876,388 | 1984 | 15,786,979 | 1983 | 15,669,817 | 1982 | 15,594,180 | 1981 | 15,546,148 | 1980 | 15,487,909 | 1979 | 15,435,080 | 1978 | 15,383,703 | 1977 | 15,326,372 | 1976 | 15,256,943 | 1975 | 15,187,371 | 1974 | 15,120,315 | 1973 | 15,065,984 | 1972 | 14,984,528 | 1971 | 14,805,256 | 1970 | 14,409,034 | 1969 | 13,912,077 | 1968 | 13,464,153 | 1967 | 12,991,698 | 1966 | 12,634,240 | 1965 | 12,663,197 | 1964 | 12,874,485 | 1963 | 12,988,837 | 1962 | 13,118,469 | 1961 | 13,260,547 | 1960 | 13,293,514 |
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