Year | Value | 2019 | 1,084 | 2018 | 1,064 | 2017 | 1,021 | 2016 | 956 | 2015 | 910 | 2014 | 808.41897206469 | 2013 | 769.49676676327 | 2012 | 728.18334883652 | 2011 | 674.82073844874 | 2010 | 630.29838600083 | 2009 | 588.12447516934 | 2008 | 564.15041719758 | 2007 | 540.37692491237 | 2006 | 510.51472629159 | 2005 | 495.14621052401 | 2004 | 468.80436695643 | 2003 | 423.52944572771 | 2002 | 412.26614302303 | 2001 | 406.37929921997 | 2000 | 385.75730406674 | 1999 | 352.99095138408 | 1998 | 327.71807620223 | 1997 | 328.38124646349 | 1996 | 295.02846276554 | 1995 | 262.01654160351 | 1994 | 238.8003402252 | 1993 | 211.86802335427 | 1992 | 193.48910949697 | 1991 | 177.216132815 | 1990 | 161.85781946687 | 1989 | 136.94391235357 | 1988 | 119.04745168474 | 1987 | 103.91982108484 | 1986 | 91.642622647968 | 1985 | 79.370683069322 | 1984 | 71.088896221189 | 1983 | 65.772150722438 | 1982 | 61.129176289084 | 1981 | 52.02182448377 | 1980 | 45.945022434506 | 1979 | 38.50218497308 | 1978 | 31.617483332716 | 1977 | 21.637651806298 | 1976 | 18.257369061825 | 1975 | 21.362177582494 | 1974 | 19.109744456525 | 1973 | 15.756674226503 | 1972 | 15.834850736985 | 1971 | 14.296924044676 |
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