Year | Value | 2022 | 24,550,701 | 2021 | 23,717,901 | 2020 | 22,902,708 | 2019 | 22,112,486 | 2018 | 21,344,424 | 2017 | 20,570,123 | 2016 | 19,785,457 | 2015 | 19,019,494 | 2014 | 18,285,957 | 2013 | 17,595,795 | 2012 | 16,972,828 | 2011 | 16,399,860 | 2010 | 15,878,896 | 2009 | 15,403,266 | 2008 | 14,941,016 | 2007 | 14,508,733 | 2006 | 14,095,657 | 2005 | 13,679,120 | 2004 | 13,289,664 | 2003 | 12,927,316 | 2002 | 12,570,672 | 2001 | 12,234,572 | 2000 | 11,933,076 | 1999 | 11,634,785 | 1998 | 11,325,341 | 1997 | 11,023,605 | 1996 | 10,742,578 | 1995 | 10,451,744 | 1994 | 10,122,325 | 1993 | 9,783,911 | 1992 | 9,467,095 | 1991 | 9,188,293 | 1990 | 8,942,957 | 1989 | 8,683,078 | 1988 | 8,423,791 | 1987 | 8,190,898 | 1986 | 7,964,889 | 1985 | 7,745,982 | 1984 | 7,543,387 | 1983 | 7,353,668 | 1982 | 7,158,543 | 1981 | 6,980,883 | 1980 | 6,837,854 | 1979 | 6,696,566 | 1978 | 6,545,046 | 1977 | 6,418,436 | 1976 | 6,311,395 | 1975 | 6,193,544 | 1974 | 6,070,826 | 1973 | 5,948,279 | 1972 | 5,829,339 | 1971 | 5,711,685 | 1970 | 5,594,026 | 1969 | 5,480,724 | 1968 | 5,367,078 | 1967 | 5,251,191 | 1966 | 5,136,857 | 1965 | 5,025,797 | 1964 | 4,917,155 | 1963 | 4,812,358 | 1962 | 4,711,368 | 1961 | 4,612,701 | 1960 | 4,513,509 |
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