Year % 1978 19.6056589060933 1979 108.47288158751626 1980 79.09675739735793 1981 133.9889469325135 1982 35.94431757502899 1983 24.84467038448327 1984 42.2603048091074 1985 61.59569812142181 1986 56.60973895658189 1987 97.16646547501959 1988 66.92447912481182 1989 45.52083727467534 1990 43.066824399765444 1991 29.941413919331026 1992 33.00699345861515 1993 37.793771764911625 1994 74.52222697687314 1995 37.36010661315305 1996 31.75013872049587 1997 32.02975167557476 1998 29.002684735101333 1999 18.194007443841855 2000 25.157569948842983 2001 30.224323154615245 2002 22.102249430810787 2003 20.96625131578097 2004 25.75009579551459 2005 26.940993078906867 2006 29.40187285810875 2007 36.94627015457537 2008 67.18717949804038 2009 37.60136876201939 2010 41.45528017305529 2011 45.291134504615606 2012 43.23113976002043 2013 45.610426573838815 2014 45.07466321736078 2015 46.362053370656895 2016 42.23445527654399 2017 40.04737104259248 2018 49.65890355155697 2019 50.659935756841065 2020 76.4875153565343 2021 90.75638706545675 2022 83.34895655148085