| Year | Value | | 2024 | 3,225,496 | | 2023 | 3,256,978 | | 2022 | 3,265,429 | | 2021 | 3,229,538 | | 2020 | 3,171,102 | | 2019 | 3,089,915 | | 2018 | 2,980,941 | | 2017 | 2,866,694 | | 2016 | 2,748,617 | | 2015 | 2,629,949 | | 2014 | 2,522,007 | | 2013 | 2,430,017 | | 2012 | 2,366,176 | | 2011 | 2,338,042 | | 2010 | 2,348,512 | | 2009 | 2,366,619 | | 2008 | 2,349,118 | | 2007 | 2,302,803 | | 2006 | 2,268,552 | | 2005 | 2,206,977 | | 2004 | 2,142,465 | | 2003 | 2,079,147 | | 2002 | 2,019,387 | | 2001 | 1,962,317 | | 2000 | 1,905,357 | | 1999 | 1,846,384 | | 1998 | 1,784,064 | | 1997 | 1,718,787 | | 1996 | 1,652,721 | | 1995 | 1,588,533 | | 1994 | 1,530,757 | | 1993 | 1,479,091 | | 1992 | 1,430,421 | | 1991 | 1,385,226 | | 1990 | 1,342,712 | | 1989 | 1,302,824 | | 1988 | 1,265,900 | | 1987 | 1,231,618 | | 1986 | 1,199,697 | | 1985 | 1,169,373 | | 1984 | 1,140,516 | | 1983 | 1,113,243 | | 1982 | 1,087,726 | | 1981 | 1,067,060 | | 1980 | 1,049,624 | | 1979 | 1,029,755 | | 1978 | 1,008,110 | | 1977 | 986,497 | | 1976 | 964,608 | | 1975 | 943,944 |
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