| Year | Value | | 2024 | 821,121 | | 2023 | 766,154 | | 2022 | 710,345 | | 2021 | 665,346 | | 2020 | 631,202 | | 2019 | 593,632 | | 2018 | 551,648 | | 2017 | 513,392 | | 2016 | 479,084 | | 2015 | 448,528 | | 2014 | 420,864 | | 2013 | 395,137 | | 2012 | 370,893 | | 2011 | 347,898 | | 2010 | 329,099 | | 2009 | 314,730 | | 2008 | 301,960 | | 2007 | 290,611 | | 2006 | 280,301 | | 2005 | 270,884 | | 2004 | 262,516 | | 2003 | 255,366 | | 2002 | 249,604 | | 2001 | 245,768 | | 2000 | 241,811 | | 1999 | 237,263 | | 1998 | 234,124 | | 1997 | 232,273 | | 1996 | 231,470 | | 1995 | 231,435 | | 1994 | 231,854 | | 1993 | 232,462 | | 1992 | 232,923 | | 1991 | 233,076 | | 1990 | 232,275 | | 1989 | 229,975 | | 1988 | 226,284 | | 1987 | 221,170 | | 1986 | 214,754 | | 1985 | 207,250 | | 1984 | 198,739 | | 1983 | 189,283 | | 1982 | 179,206 | | 1981 | 168,910 | | 1980 | 158,684 | | 1979 | 148,656 | | 1978 | 138,951 | | 1977 | 129,523 | | 1976 | 120,093 | | 1975 | 110,533 |
|