Year | Value | 2023 | 16,508,248 | 2022 | 16,380,808 | 2021 | 16,422,450 | 2020 | 16,488,067 | 2019 | 16,375,331 | 2018 | 16,168,215 | 2017 | 16,020,283 | 2016 | 15,854,296 | 2015 | 15,679,643 | 2014 | 15,527,231 | 2013 | 15,358,977 | 2012 | 15,178,196 | 2011 | 15,032,589 | 2010 | 14,891,655 | 2009 | 14,806,680 | 2008 | 14,652,955 | 2007 | 14,465,428 | 2006 | 14,400,571 | 2005 | 14,149,284 | 2004 | 13,917,573 | 2003 | 13,726,501 | 2002 | 13,663,893 | 2001 | 13,443,949 | 2000 | 13,398,796 | 1999 | 13,236,067 | 1998 | 13,098,251 | 1997 | 13,050,833 | 1996 | 12,917,994 | 1995 | 12,772,738 | 1994 | 12,744,731 | 1993 | 12,710,068 | 1992 | 12,680,509 | 1991 | 12,634,247 |
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