Year | Value | 2023 | 178,726 | 2022 | 176,172 | 2021 | 173,003 | 2020 | 170,636 | 2019 | 169,603 | 2018 | 170,074 | 2017 | 171,575 | 2016 | 172,791 | 2015 | 172,644 | 2014 | 171,223 | 2013 | 168,744 | 2012 | 166,423 | 2011 | 165,301 | 2010 | 164,735 | 2009 | 163,480 | 2008 | 160,107 | 2007 | 155,529 | 2006 | 152,000 | 2005 | 150,181 | 2004 | 150,241 | 2003 | 154,119 | 2002 | 160,952 | 2001 | 167,217 | 2000 | 172,639 | 1999 | 177,801 | 1998 | 181,860 | 1997 | 184,032 | 1996 | 185,244 | 1995 | 186,210 | 1994 | 186,739 | 1993 | 186,052 | 1992 | 185,559 | 1991 | 186,575 | 1990 | 188,125 | 1989 | 190,166 | 1988 | 192,946 | 1987 | 195,946 | 1986 | 197,601 | 1985 | 198,985 | 1984 | 201,533 | 1983 | 205,308 | 1982 | 209,361 | 1981 | 213,006 | 1980 | 214,049 | 1979 | 207,942 | 1978 | 196,234 | 1977 | 180,429 | 1976 | 167,552 | 1975 | 157,351 | 1974 | 150,090 |
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