Year | Value | 2023 | 38,419 | 2022 | 38,088 | 2021 | 37,979 | 2020 | 37,473 | 2019 | 37,773 | 2018 | 37,382 | 2017 | 37,068 | 2016 | 36,750 | 2015 | 36,236 | 2014 | 35,897 | 2013 | 35,652 | 2012 | 35,379 | 2011 | 35,040 | 2010 | 35,751 | 2009 | 35,497 | 2008 | 34,500 | 2007 | 33,818 | 2006 | 34,015 | 2005 | 34,103 | 2004 | 34,145 | 2003 | 33,862 | 2002 | 33,133 | 2001 | 31,744 | 2000 | 30,824 | 1999 | 30,670 | 1998 | 30,059 | 1997 | 29,716 | 1996 | 29,239 | 1995 | 28,624 | 1994 | 28,330 | 1993 | 28,337 | 1992 | 28,490 | 1991 | 28,320 |
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