Year | Value | 2022 | 25,012,473 | 2021 | 24,907,533 | 2020 | 25,151,087 | 2019 | 25,564,613 | 2018 | 26,308,612 | 2017 | 26,951,752 | 2016 | 27,103,212 | 2015 | 26,913,166 | 2014 | 26,613,545 | 2013 | 26,297,143 | 2012 | 25,970,224 | 2011 | 25,636,044 | 2010 | 25,293,053 | 2009 | 24,944,692 | 2008 | 24,590,433 | 2007 | 24,223,737 | 2006 | 23,844,411 | 2005 | 23,456,263 | 2004 | 23,060,812 | 2003 | 22,662,919 | 2002 | 22,259,807 | 2001 | 21,857,258 | 2000 | 21,388,675 | 1999 | 20,914,049 | 1998 | 20,438,686 | 1997 | 19,962,047 | 1996 | 19,487,857 | 1995 | 19,015,361 | 1994 | 18,543,164 | 1993 | 18,070,811 | 1992 | 17,597,876 | 1991 | 17,124,322 | 1990 | 16,646,578 | 1989 | 16,159,056 | 1988 | 15,674,578 | 1987 | 15,194,455 | 1986 | 14,720,573 | 1985 | 14,256,838 | 1984 | 13,803,662 | 1983 | 13,357,419 | 1982 | 12,918,717 | 1981 | 12,482,592 | 1980 | 12,044,389 | 1979 | 11,613,871 | 1978 | 11,191,936 | 1977 | 10,779,637 | 1976 | 10,377,533 | 1975 | 9,985,857 | 1974 | 9,605,227 | 1973 | 9,234,736 | 1972 | 8,874,338 | 1971 | 8,517,517 | 1970 | 8,159,136 | 1969 | 7,809,239 | 1968 | 7,467,976 | 1967 | 7,134,322 | 1966 | 6,809,468 | 1965 | 6,493,184 | 1964 | 6,185,923 | 1963 | 5,886,886 | 1962 | 5,596,747 | 1961 | 5,314,890 | 1960 | 5,025,734 |
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