| Year | Value | | 2022 | 3,785,894 | | 2021 | 3,907,930 | | 2020 | 3,970,181 | | 2019 | 3,988,271 | | 2018 | 3,967,126 | | 2017 | 3,908,974 | | 2016 | 3,829,151 | | 2015 | 3,742,865 | | 2014 | 3,665,863 | | 2013 | 3,629,008 | | 2012 | 3,620,742 | | 2011 | 3,580,638 | | 2010 | 3,514,975 | | 2009 | 3,463,763 | | 2008 | 3,409,115 | | 2007 | 3,364,761 | | 2006 | 3,383,252 | | 2005 | 3,464,316 | | 2004 | 3,561,475 | | 2003 | 3,671,121 | | 2002 | 3,807,235 | | 2001 | 3,965,980 | | 2000 | 4,117,104 | | 1999 | 4,241,283 | | 1998 | 4,303,842 | | 1997 | 4,324,145 | | 1996 | 4,314,557 | | 1995 | 4,282,597 | | 1994 | 4,235,352 | | 1993 | 4,179,176 | | 1992 | 4,107,972 | | 1991 | 4,019,972 | | 1990 | 3,857,239 | | 1989 | 3,649,002 | | 1988 | 3,453,825 | | 1987 | 3,276,217 | | 1986 | 3,152,251 | | 1985 | 3,129,201 | | 1984 | 3,174,082 | | 1983 | 3,223,437 | | 1982 | 3,282,054 | | 1981 | 3,340,048 | | 1980 | 3,382,339 | | 1979 | 3,405,855 | | 1978 | 3,427,380 | | 1977 | 3,462,440 | | 1976 | 3,497,955 | | 1975 | 3,535,311 | | 1974 | 3,576,495 | | 1973 | 3,609,291 | | 1972 | 3,621,615 | | 1971 | 3,618,572 | | 1970 | 3,628,333 | | 1969 | 3,635,826 | | 1968 | 3,633,489 | | 1967 | 3,618,598 | | 1966 | 3,559,784 | | 1965 | 3,442,609 | | 1964 | 3,277,139 | | 1963 | 3,023,781 | | 1962 | 2,712,246 | | 1961 | 2,446,818 | | 1960 | 2,269,226 |
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