| Year | Value | | 2024 | 2,578,323 | | 2023 | 2,607,945 | | 2022 | 2,628,510 | | 2021 | 2,635,303 | | 2020 | 2,628,478 | | 2019 | 2,614,354 | | 2018 | 2,595,683 | | 2017 | 2,573,308 | | 2016 | 2,546,514 | | 2015 | 2,515,035 | | 2014 | 2,478,283 | | 2013 | 2,432,513 | | 2012 | 2,375,692 | | 2011 | 2,310,289 | | 2010 | 2,237,642 | | 2009 | 2,164,366 | | 2008 | 2,094,331 | | 2007 | 2,024,292 | | 2006 | 1,954,503 | | 2005 | 1,886,321 | | 2004 | 1,818,885 | | 2003 | 1,748,314 | | 2002 | 1,671,767 | | 2001 | 1,585,317 | | 2000 | 1,487,434 | | 1999 | 1,386,059 | | 1998 | 1,295,433 | | 1997 | 1,225,637 | | 1996 | 1,181,833 | | 1995 | 1,160,055 | | 1994 | 1,144,880 | | 1993 | 1,126,948 | | 1992 | 1,102,844 | | 1991 | 1,070,742 | | 1990 | 1,032,121 | | 1989 | 993,763 | | 1988 | 954,958 | | 1987 | 912,347 | | 1986 | 872,160 | | 1985 | 837,523 | | 1984 | 807,453 | | 1983 | 781,632 | | 1982 | 759,528 | | 1981 | 737,449 | | 1980 | 712,745 | | 1979 | 685,606 | | 1978 | 655,965 | | 1977 | 624,469 | | 1976 | 594,541 | | 1975 | 567,986 |
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