| Year | Value | | 2022 | 3,952,319 | | 2021 | 3,908,551 | | 2020 | 4,027,886 | | 2019 | 4,036,813 | | 2018 | 3,908,449 | | 2017 | 3,772,362 | | 2016 | 3,650,278 | | 2015 | 3,563,426 | | 2014 | 3,547,365 | | 2013 | 3,564,782 | | 2012 | 3,554,097 | | 2011 | 3,506,028 | | 2010 | 3,436,971 | | 2009 | 3,360,111 | | 2008 | 3,288,170 | | 2007 | 3,211,777 | | 2006 | 3,137,740 | | 2005 | 3,072,179 | | 2004 | 3,001,472 | | 2003 | 2,916,818 | | 2002 | 2,818,006 | | 2001 | 2,704,914 | | 2000 | 2,594,112 | | 1999 | 2,482,667 | | 1998 | 2,358,442 | | 1997 | 2,243,139 | | 1996 | 2,151,162 | | 1995 | 2,065,466 | | 1994 | 2,004,360 | | 1993 | 1,978,474 | | 1992 | 1,953,509 | | 1991 | 1,916,740 | | 1990 | 1,868,528 | | 1989 | 1,815,382 | | 1988 | 1,755,588 | | 1987 | 1,687,280 | | 1986 | 1,602,138 | | 1985 | 1,514,199 | | 1984 | 1,429,382 | | 1983 | 1,351,559 | | 1982 | 1,286,877 | | 1981 | 1,243,581 | | 1980 | 1,213,596 | | 1979 | 1,175,318 | | 1978 | 1,129,482 | | 1977 | 1,076,587 | | 1976 | 1,021,737 | | 1975 | 970,267 | | 1974 | 926,344 | | 1973 | 884,936 | | 1972 | 842,383 | | 1971 | 802,360 | | 1970 | 761,131 | | 1969 | 737,798 | | 1968 | 721,891 | | 1967 | 706,692 | | 1966 | 686,700 | | 1965 | 666,400 | | 1964 | 642,684 | | 1963 | 618,706 | | 1962 | 602,020 | | 1961 | 595,006 | | 1960 | 590,840 |
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