Year | Value | 2022 | 21,001,270 | 2021 | 20,533,241 | 2020 | 20,247,928 | 2019 | 20,012,436 | 2018 | 19,749,358 | 2017 | 19,543,489 | 2016 | 19,445,377 | 2015 | 19,425,609 | 2014 | 19,423,737 | 2013 | 19,512,368 | 2012 | 19,736,720 | 2011 | 20,043,814 | 2010 | 20,344,922 | 2009 | 20,533,333 | 2008 | 20,568,120 | 2007 | 20,468,836 | 2006 | 20,279,761 | 2005 | 20,049,422 | 2004 | 19,838,925 | 2003 | 19,643,190 | 2002 | 19,427,098 | 2001 | 19,134,421 | 2000 | 18,744,855 | 1999 | 18,311,968 | 1998 | 17,822,873 | 1997 | 17,247,043 | 1996 | 16,618,142 | 1995 | 16,016,589 | 1994 | 15,438,850 | 1993 | 14,910,807 | 1992 | 14,466,321 | 1991 | 14,054,998 | 1990 | 13,662,718 | 1989 | 13,193,619 | 1988 | 12,850,787 | 1987 | 12,522,111 | 1986 | 12,187,842 | 1985 | 11,857,137 | 1984 | 11,534,933 | 1983 | 11,209,465 | 1982 | 10,887,768 | 1981 | 10,509,186 | 1980 | 10,110,187 | 1979 | 9,759,553 | 1978 | 9,432,117 | 1977 | 9,103,276 | 1976 | 8,778,068 | 1975 | 8,498,234 | 1974 | 8,250,096 | 1973 | 8,018,294 | 1972 | 7,791,366 | 1971 | 7,546,961 | 1970 | 7,278,789 | 1969 | 7,008,445 | 1968 | 6,724,813 | 1967 | 6,430,335 | 1966 | 6,141,966 | 1965 | 5,864,967 | 1964 | 5,581,778 | 1963 | 5,312,130 | 1962 | 5,075,598 | 1961 | 4,866,133 | 1960 | 4,693,608 |
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