| Year | Value | | 2024 | 4,316,390 | | 2023 | 4,268,758 | | 2022 | 4,219,483 | | 2021 | 4,170,889 | | 2020 | 4,118,225 | | 2019 | 4,048,837 | | 2018 | 3,964,682 | | 2017 | 3,874,265 | | 2016 | 3,780,717 | | 2015 | 3,688,595 | | 2014 | 3,599,302 | | 2013 | 3,508,477 | | 2012 | 3,415,941 | | 2011 | 3,322,934 | | 2010 | 3,226,595 | | 2009 | 3,126,651 | | 2008 | 3,024,419 | | 2007 | 2,919,755 | | 2006 | 2,814,810 | | 2005 | 2,711,077 | | 2004 | 2,607,570 | | 2003 | 2,506,376 | | 2002 | 2,409,595 | | 2001 | 2,315,591 | | 2000 | 2,224,133 | | 1999 | 2,138,939 | | 1998 | 2,059,692 | | 1997 | 1,984,166 | | 1996 | 1,912,232 | | 1995 | 1,841,190 | | 1994 | 1,770,252 | | 1993 | 1,701,733 | | 1992 | 1,636,843 | | 1991 | 1,575,619 | | 1990 | 1,519,244 | | 1989 | 1,464,909 | | 1988 | 1,408,022 | | 1987 | 1,348,650 | | 1986 | 1,289,062 | | 1985 | 1,232,591 | | 1984 | 1,183,680 | | 1983 | 1,146,098 | | 1982 | 1,119,169 | | 1981 | 1,097,899 | | 1980 | 1,081,605 | | 1979 | 1,068,405 | | 1978 | 1,052,913 | | 1977 | 1,033,975 | | 1976 | 1,011,436 | | 1975 | 986,178 |
|