| Year | Value | | 2022 | 1,871,506 | | 2021 | 1,826,695 | | 2020 | 1,777,403 | | 2019 | 1,720,020 | | 2018 | 1,657,477 | | 2017 | 1,593,458 | | 2016 | 1,535,503 | | 2015 | 1,482,568 | | 2014 | 1,434,271 | | 2013 | 1,382,751 | | 2012 | 1,320,975 | | 2011 | 1,266,033 | | 2010 | 1,224,928 | | 2009 | 1,187,796 | | 2008 | 1,148,582 | | 2007 | 1,134,259 | | 2006 | 1,154,976 | | 2005 | 1,157,987 | | 2004 | 1,134,848 | | 2003 | 1,112,105 | | 2002 | 1,084,773 | | 2001 | 1,053,702 | | 2000 | 1,021,548 | | 1999 | 986,031 | | 1998 | 948,812 | | 1997 | 909,985 | | 1996 | 869,763 | | 1995 | 828,349 | | 1994 | 786,654 | | 1993 | 736,986 | | 1992 | 691,826 | | 1991 | 653,879 | | 1990 | 616,133 | | 1989 | 574,908 | | 1988 | 524,781 | | 1987 | 474,795 | | 1986 | 443,759 | | 1985 | 440,004 | | 1984 | 447,334 | | 1983 | 462,259 | | 1982 | 482,547 | | 1981 | 489,887 | | 1980 | 480,548 | | 1979 | 461,334 | | 1978 | 436,407 | | 1977 | 410,778 | | 1976 | 389,156 | | 1975 | 376,206 | | 1974 | 366,685 | | 1973 | 355,824 | | 1972 | 345,785 | | 1971 | 337,002 | | 1970 | 326,348 | | 1969 | 315,275 | | 1968 | 304,326 | | 1967 | 293,722 | | 1966 | 284,168 | | 1965 | 275,642 | | 1964 | 267,768 | | 1963 | 260,858 | | 1962 | 254,779 | | 1961 | 248,812 | | 1960 | 242,607 |
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