| Year | Value | | 2024 | 245,288 | | 2023 | 245,825 | | 2022 | 245,839 | | 2021 | 245,080 | | 2020 | 257,436 | | 2019 | 278,968 | | 2018 | 273,696 | | 2017 | 268,583 | | 2016 | 268,657 | | 2015 | 266,278 | | 2014 | 262,021 | | 2013 | 250,114 | | 2012 | 249,372 | | 2011 | 242,523 | | 2010 | 241,400 | | 2009 | 240,225 | | 2008 | 239,423 | | 2007 | 237,751 | | 2006 | 236,396 | | 2005 | 235,611 | | 2004 | 235,094 | | 2003 | 234,782 | | 2002 | 233,949 | | 2001 | 232,810 | | 2000 | 231,231 | | 1999 | 231,059 | | 1998 | 230,342 | | 1997 | 230,645 | | 1996 | 230,858 | | 1995 | 231,115 | | 1994 | 231,279 | | 1993 | 230,998 | | 1992 | 230,032 | | 1991 | 229,124 | | 1990 | 228,627 |
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