Year | Value | 2022 | 24,893,900 | 2021 | 24,364,783 | 2020 | 23,671,627 | 2019 | 22,983,835 | 2018 | 22,335,720 | 2017 | 21,735,145 | 2016 | 21,160,317 | 2015 | 20,602,638 | 2014 | 20,065,074 | 2013 | 19,535,234 | 2012 | 19,000,211 | 2011 | 18,475,927 | 2010 | 17,977,748 | 2009 | 17,510,387 | 2008 | 17,092,052 | 2007 | 16,725,881 | 2006 | 16,379,908 | 2005 | 16,033,503 | 2004 | 15,692,236 | 2003 | 15,330,926 | 2002 | 14,932,002 | 2001 | 14,547,549 | 2000 | 14,195,851 | 1999 | 13,853,013 | 1998 | 13,522,720 | 1997 | 13,218,062 | 1996 | 12,929,980 | 1995 | 12,623,654 | 1994 | 12,255,708 | 1993 | 11,848,536 | 1992 | 11,447,999 | 1991 | 11,081,800 | 1990 | 10,721,333 | 1989 | 10,319,960 | 1988 | 9,996,484 | 1987 | 9,738,118 | 1986 | 9,564,894 | 1985 | 9,497,774 | 1984 | 9,500,801 | 1983 | 9,552,200 | 1982 | 9,631,498 | 1981 | 9,625,250 | 1980 | 9,499,719 | 1979 | 9,263,598 | 1978 | 8,926,493 | 1977 | 8,581,238 | 1976 | 8,298,171 | 1975 | 8,142,192 | 1974 | 8,115,529 | 1973 | 8,149,885 | 1972 | 8,171,761 | 1971 | 8,153,857 | 1970 | 8,085,521 | 1969 | 7,965,652 | 1968 | 7,802,908 | 1967 | 7,606,753 | 1966 | 7,386,776 | 1965 | 7,139,510 | 1964 | 6,890,429 | 1963 | 6,673,209 | 1962 | 6,450,361 | 1961 | 6,235,156 | 1960 | 6,090,738 |
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