Year | Value | 2022 | 29,273,067 | 2021 | 28,775,416 | 2020 | 28,049,530 | 2019 | 27,321,889 | 2018 | 26,610,643 | 2017 | 25,927,051 | 2016 | 25,255,049 | 2015 | 24,583,735 | 2014 | 23,920,635 | 2013 | 23,260,065 | 2012 | 22,612,534 | 2011 | 21,992,487 | 2010 | 21,390,161 | 2009 | 20,798,351 | 2008 | 20,232,474 | 2007 | 19,696,336 | 2006 | 19,170,449 | 2005 | 18,651,440 | 2004 | 18,177,359 | 2003 | 17,760,438 | 2002 | 17,369,725 | 2001 | 17,001,730 | 2000 | 16,668,869 | 1999 | 16,334,038 | 1998 | 15,969,377 | 1997 | 15,590,204 | 1996 | 15,232,377 | 1995 | 14,867,110 | 1994 | 14,436,882 | 1993 | 14,015,477 | 1992 | 13,649,030 | 1991 | 13,312,005 | 1990 | 13,009,310 | 1989 | 12,654,531 | 1988 | 12,313,728 | 1987 | 11,972,279 | 1986 | 11,632,990 | 1985 | 11,260,834 | 1984 | 10,870,116 | 1983 | 10,530,729 | 1982 | 10,244,755 | 1981 | 10,054,963 | 1980 | 9,992,198 | 1979 | 9,995,288 | 1978 | 10,048,714 | 1977 | 10,134,303 | 1976 | 10,109,744 | 1975 | 9,946,073 | 1974 | 9,681,184 | 1973 | 9,321,099 | 1972 | 8,959,680 | 1971 | 8,672,580 | 1970 | 8,521,317 | 1969 | 8,492,986 | 1968 | 8,530,000 | 1967 | 8,547,547 | 1966 | 8,519,187 | 1965 | 8,435,000 | 1964 | 8,298,943 | 1963 | 8,126,056 | 1962 | 7,925,470 | 1961 | 7,701,077 | 1960 | 7,452,077 |
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