Year | Value | 2023 | 158,857 | 2022 | 156,128 | 2021 | 153,714 | 2020 | 152,371 | 2019 | 152,175 | 2018 | 152,169 | 2017 | 152,704 | 2016 | 153,623 | 2015 | 155,270 | 2014 | 158,193 | 2013 | 161,655 | 2012 | 165,318 | 2011 | 168,220 | 2010 | 169,898 | 2009 | 170,268 | 2008 | 169,704 | 2007 | 167,793 | 2006 | 165,122 | 2005 | 163,335 | 2004 | 162,965 | 2003 | 164,252 | 2002 | 166,769 | 2001 | 169,011 | 2000 | 169,811 | 1999 | 169,430 | 1998 | 168,002 | 1997 | 166,615 | 1996 | 166,548 | 1995 | 167,273 | 1994 | 166,985 | 1993 | 164,358 | 1992 | 160,527 | 1991 | 156,998 | 1990 | 154,573 | 1989 | 154,765 | 1988 | 159,014 | 1987 | 166,002 | 1986 | 172,845 | 1985 | 178,888 | 1984 | 184,470 | 1983 | 189,083 | 1982 | 191,739 | 1981 | 193,315 | 1980 | 194,871 | 1979 | 196,273 | 1978 | 196,599 | 1977 | 197,108 | 1976 | 199,827 | 1975 | 203,503 | 1974 | 206,768 |
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