| Year | Value | | 2023 | 1,241,831,009 | | 2022 | 1,244,253,532 | | 2021 | 1,236,998,459 | | 2020 | 1,212,444,660 | | 2019 | 1,233,878,972 | | 2018 | 1,231,396,559 | | 2017 | 1,230,432,550 | | 2016 | 1,229,212,768 | | 2015 | 1,226,742,351 | | 2014 | 1,221,667,979 | | 2013 | 1,216,553,597 | | 2012 | 1,213,226,376 | | 2011 | 1,206,919,021 | | 2010 | 1,197,901,748 | | 2009 | 1,196,595,978 | | 2008 | 1,190,483,329 | | 2007 | 1,183,602,767 | | 2006 | 1,175,033,114 | | 2005 | 1,164,568,524 | | 2004 | 1,150,638,911 | | 2003 | 1,137,834,462 | | 2002 | 1,125,852,600 | | 2001 | 1,112,928,801 | | 2000 | 1,100,938,130 | | 1999 | 1,086,376,789 | | 1998 | 1,067,742,253 | | 1997 | 1,052,951,037 | | 1996 | 1,037,382,704 | | 1995 | 1,025,817,600 | | 1994 | 1,012,055,031 | | 1993 | 1,000,501,443 | | 1992 | 989,527,527 | | 1991 | 976,792,520 |
|