Year | Value | 2023 | 171,359,717 | 2022 | 170,356,608 | 2021 | 167,765,793 | 2020 | 166,041,468 | 2019 | 168,553,082 | 2018 | 167,827,591 | 2017 | 167,178,725 | 2016 | 166,577,947 | 2015 | 165,317,013 | 2014 | 164,979,047 | 2013 | 164,570,106 | 2012 | 164,067,776 | 2011 | 162,981,470 | 2010 | 163,277,615 | 2009 | 163,183,012 | 2008 | 162,804,316 | 2007 | 161,167,479 | 2006 | 159,484,815 | 2005 | 157,755,833 | 2004 | 155,671,975 | 2003 | 154,429,400 | 2002 | 152,252,996 | 2001 | 150,332,234 | 2000 | 149,936,261 | 1999 | 148,973,982 | 1998 | 147,556,317 | 1997 | 146,194,894 | 1996 | 145,300,770 | 1995 | 144,300,674 | 1994 | 144,144,730 | 1993 | 143,411,113 | 1992 | 143,148,843 | 1991 | 143,607,595 |
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