| Year | Value | | 2022 | 4,801,365 | | 2021 | 4,746,887 | | 2020 | 4,687,103 | | 2019 | 4,623,735 | | 2018 | 4,531,736 | | 2017 | 4,436,041 | | 2016 | 4,353,251 | | 2015 | 4,308,299 | | 2014 | 4,329,217 | | 2013 | 4,453,154 | | 2012 | 4,648,136 | | 2011 | 4,889,030 | | 2010 | 5,171,009 | | 2009 | 5,420,721 | | 2008 | 5,578,984 | | 2007 | 5,674,768 | | 2006 | 5,700,284 | | 2005 | 5,646,749 | | 2004 | 5,606,326 | | 2003 | 5,565,494 | | 2002 | 5,496,231 | | 2001 | 5,437,910 | | 2000 | 5,371,305 | | 1999 | 5,302,383 | | 1998 | 5,202,390 | | 1997 | 5,040,889 | | 1996 | 4,837,839 | | 1995 | 4,476,125 | | 1994 | 3,886,929 | | 1993 | 3,282,615 | | 1992 | 2,838,266 | | 1991 | 2,685,162 | | 1990 | 2,919,975 | | 1989 | 3,482,082 | | 1988 | 4,189,961 | | 1987 | 4,849,035 | | 1986 | 5,171,160 | | 1985 | 5,162,561 | | 1984 | 4,937,864 | | 1983 | 4,562,520 | | 1982 | 4,241,106 | | 1981 | 4,067,574 | | 1980 | 4,089,939 | | 1979 | 4,319,807 | | 1978 | 4,667,709 | | 1977 | 4,930,048 | | 1976 | 5,030,613 | | 1975 | 4,925,434 | | 1974 | 4,613,858 | | 1973 | 4,169,184 | | 1972 | 3,640,632 | | 1971 | 3,122,409 | | 1970 | 2,693,379 | | 1969 | 2,381,398 | | 1968 | 2,220,119 | | 1967 | 2,126,559 | | 1966 | 2,050,058 | | 1965 | 2,063,229 | | 1964 | 2,166,606 | | 1963 | 2,268,470 | | 1962 | 2,406,615 | | 1961 | 2,589,636 | | 1960 | 2,713,820 |
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