Year % 1979 50.080499766291 1980 48.7442409552962 1981 85.6408326172333 1982 59.79395242892021 1983 50.222029725540295 1984 60.5657320832222 1985 55.1047173620275 1986 80.0218469977614 1987 78.3041949362398 1988 90.04853292565251 1989 85.0463941616771 1990 67.6476182549832 1991 85.56719465925819 1992 106.979521851439 1993 150.83338067643498 1994 149.563159215616 1995 101.24882697483899 1996 127.59062823143398 1997 407.88049862755196 1998 139.94731455091102 1999 249.792558676444 2000 289.24398485574596 2001 159.889315405992 2002 231.73657017718398 2003 138.777827124922 2004 122.762553663034 2005 167.089073086389 2006 160.506345916634 2007 170.842242623022 2008 252.172500085387 2009 201.948804360467 2010 149.256930593988 2011 194.190124415454 2012 134.36053840963 2013 107.719673722026 2014 105.849479005507 2015 149.75076668306 2016 126.083146853076 2017 112.35847715606899 2018 173.7081 2019 129.8341 2020 238.5221 2021 252.4055 2022 185.4193