| Year | Value | | 2022 | 4,268,873 | | 2021 | 4,250,114 | | 2020 | 4,360,444 | | 2019 | 4,441,100 | | 2018 | 4,317,185 | | 2017 | 4,124,904 | | 2016 | 4,048,085 | | 2015 | 3,908,743 | | 2014 | 3,761,584 | | 2013 | 3,646,518 | | 2012 | 3,394,663 | | 2011 | 3,143,825 | | 2010 | 2,943,356 | | 2009 | 2,795,550 | | 2008 | 2,650,930 | | 2007 | 2,506,769 | | 2006 | 2,363,409 | | 2005 | 2,235,403 | | 2004 | 2,153,481 | | 2003 | 2,101,506 | | 2002 | 2,047,364 | | 2001 | 1,989,842 | | 2000 | 1,915,552 | | 1999 | 1,856,062 | | 1998 | 1,795,981 | | 1997 | 1,735,522 | | 1996 | 1,674,787 | | 1995 | 1,623,707 | | 1994 | 1,608,760 | | 1993 | 1,620,837 | | 1992 | 1,588,253 | | 1991 | 1,312,549 | | 1990 | 1,641,004 | | 1989 | 2,164,929 | | 1988 | 2,085,420 | | 1987 | 2,006,114 | | 1986 | 1,927,098 | | 1985 | 1,849,363 | | 1984 | 1,769,561 | | 1983 | 1,684,537 | | 1982 | 1,593,647 | | 1981 | 1,504,914 | | 1980 | 1,415,905 | | 1979 | 1,326,513 | | 1978 | 1,236,039 | | 1977 | 1,146,749 | | 1976 | 1,060,619 | | 1975 | 979,647 | | 1974 | 912,741 | | 1973 | 853,113 | | 1972 | 796,747 | | 1971 | 742,324 | | 1970 | 687,675 | | 1969 | 628,481 | | 1968 | 567,854 | | 1967 | 509,922 | | 1966 | 456,419 | | 1965 | 407,336 | | 1964 | 364,872 | | 1963 | 325,929 | | 1962 | 289,920 | | 1961 | 257,446 | | 1960 | 228,734 |
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