Year | Value | 2023 | 46,343 | 2022 | 46,633 | 2021 | 45,794 | 2020 | 45,478 | 2019 | 45,034 | 2018 | 47,523 | 2017 | 51,143 | 2016 | 50,528 | 2015 | 50,865 | 2014 | 48,813 | 2013 | 49,378 | 2012 | 52,225 | 2011 | 53,049 | 2010 | 52,343 | 2009 | 53,822 | 2008 | 53,658 | 2007 | 53,576 | 2006 | 52,734 | 2005 | 52,106 | 2004 | 50,874 | 2003 | 48,940 | 2002 | 49,717 | 2001 | 50,147 | 2000 | 47,925 | 1999 | 46,725 | 1998 | 47,372 | 1997 | 47,319 | 1996 | 47,277 | 1995 | 49,828 | 1994 | 52,685 | 1993 | 55,853 | 1992 | 51,994 | 1991 | 50,816 |
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