| Year | Value | | 2022 | 3,842,402 | | 2021 | 3,879,652 | | 2020 | 3,914,416 | | 2019 | 3,943,704 | | 2018 | 3,967,904 | | 2017 | 3,981,871 | | 2016 | 3,975,379 | | 2015 | 3,947,110 | | 2014 | 3,906,957 | | 2013 | 3,863,087 | | 2012 | 3,817,988 | | 2011 | 3,774,211 | | 2010 | 3,741,588 | | 2009 | 3,724,103 | | 2008 | 3,708,904 | | 2007 | 3,697,131 | | 2006 | 3,690,237 | | 2005 | 3,673,690 | | 2004 | 3,641,321 | | 2003 | 3,609,052 | | 2002 | 3,594,673 | | 2001 | 3,612,656 | | 2000 | 3,678,637 | | 1999 | 3,800,420 | | 1998 | 3,967,468 | | 1997 | 4,151,809 | | 1996 | 4,330,736 | | 1995 | 4,480,472 | | 1994 | 4,582,532 | | 1993 | 4,638,491 | | 1992 | 4,662,722 | | 1991 | 4,670,405 | | 1990 | 4,670,777 | | 1989 | 4,667,243 | | 1988 | 4,656,866 | | 1987 | 4,633,196 | | 1986 | 4,590,750 | | 1985 | 4,526,915 | | 1984 | 4,447,352 | | 1983 | 4,359,786 | | 1982 | 4,266,103 | | 1981 | 4,171,844 | | 1980 | 4,086,624 | | 1979 | 3,997,257 | | 1978 | 3,919,361 | | 1977 | 3,858,024 | | 1976 | 3,783,018 | | 1975 | 3,694,642 | | 1974 | 3,606,722 | | 1973 | 3,511,625 | | 1972 | 3,409,754 | | 1971 | 3,323,279 | | 1970 | 3,267,566 | | 1969 | 3,245,823 | | 1968 | 3,247,697 | | 1967 | 3,260,174 | | 1966 | 3,229,651 | | 1965 | 3,184,616 | | 1964 | 3,157,711 | | 1963 | 3,111,901 | | 1962 | 3,056,406 | | 1961 | 3,016,047 | | 1960 | 2,945,228 |
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