Year | Value | 2022 | 43,472,783 | 2021 | 43,697,018 | 2020 | 44,096,728 | 2019 | 44,275,319 | 2018 | 44,290,251 | 2017 | 44,153,325 | 2016 | 43,955,917 | 2015 | 43,691,116 | 2014 | 43,518,106 | 2013 | 43,469,596 | 2012 | 43,467,421 | 2011 | 43,590,156 | 2010 | 43,847,209 | 2009 | 43,976,917 | 2008 | 44,006,973 | 2007 | 43,952,788 | 2006 | 43,671,258 | 2005 | 43,370,221 | 2004 | 43,320,539 | 2003 | 43,326,735 | 2002 | 43,257,118 | 2001 | 43,271,270 | 2000 | 43,291,791 | 1999 | 43,082,156 | 1998 | 42,769,383 | 1997 | 42,435,198 | 1996 | 42,059,361 | 1995 | 41,610,077 | 1994 | 41,108,267 | 1993 | 40,517,070 | 1992 | 39,858,700 | 1991 | 39,365,049 | 1990 | 38,808,630 | 1989 | 38,200,445 | 1988 | 37,901,106 | 1987 | 37,784,328 | 1986 | 37,232,872 | 1985 | 36,055,196 | 1984 | 34,757,331 | 1983 | 33,507,082 | 1982 | 32,151,559 | 1981 | 30,956,853 | 1980 | 30,526,513 | 1979 | 30,409,350 | 1978 | 29,986,536 | 1977 | 29,560,764 | 1976 | 29,357,893 | 1975 | 29,117,403 | 1974 | 28,753,313 | 1973 | 28,516,693 | 1972 | 28,357,445 | 1971 | 28,201,002 | 1970 | 28,150,133 | 1969 | 28,370,191 | 1968 | 28,490,690 | 1967 | 28,447,940 | 1966 | 28,289,356 | 1965 | 27,879,920 | 1964 | 27,224,560 | 1963 | 26,719,876 | 1962 | 26,329,803 | 1961 | 25,811,701 | 1960 | 25,452,270 |
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