| Year | Value | | 2024 | 115,204 | | 2023 | 111,666 | | 2022 | 107,997 | | 2021 | 105,677 | | 2020 | 105,224 | | 2019 | 105,154 | | 2018 | 106,285 | | 2017 | 108,185 | | 2016 | 110,429 | | 2015 | 112,662 | | 2014 | 115,008 | | 2013 | 117,343 | | 2012 | 120,272 | | 2011 | 125,716 | | 2010 | 133,976 | | 2009 | 143,626 | | 2008 | 151,018 | | 2007 | 155,599 | | 2006 | 160,184 | | 2005 | 162,506 | | 2004 | 163,506 | | 2003 | 165,977 | | 2002 | 168,007 | | 2001 | 167,263 | | 2000 | 166,306 | | 1999 | 165,399 | | 1998 | 164,405 | | 1997 | 164,253 | | 1996 | 166,018 | | 1995 | 169,742 | | 1994 | 175,205 | | 1993 | 177,950 | | 1992 | 177,148 | | 1991 | 176,868 | | 1990 | 177,544 | | 1989 | 182,185 | | 1988 | 185,303 | | 1987 | 183,680 | | 1986 | 182,573 | | 1985 | 183,089 | | 1984 | 186,639 | | 1983 | 192,869 | | 1982 | 199,005 | | 1981 | 203,935 | | 1980 | 207,873 | | 1979 | 210,289 | | 1978 | 210,598 | | 1977 | 209,081 | | 1976 | 206,395 | | 1975 | 202,629 |
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