Year annual % 1975 51.290251162333035 1976 25.371945171623228 1977 16.05473056222035 1978 28.045237137365337 1979 2.6392040495723514 1980 13.690010543859051 1981 5.693920899898282 1982 14.199990093194733 1983 22.776731274475782 1984 20.45351313704313 1985 22.873938383283964 1986 11.12929735185602 1987 14.068425897514574 1988 37.19579608822082 1989 25.66389032672972 1990 0.5972701570876683 1991 20.092781010757758 1992 21.21489207546 1993 13.564347785321281 1994 10.873703517800097 1995 3.8638002173022703 1996 16.334032629284884 1997 19.408115200295818 1998 12.87239508188645 1999 15.62859179724441 2000 -6.606884465015953 2001 9.730031174862638 2002 13.241122318234558 2003 14.442331469604333 2004 7.009710281841117 2005 9.71741517474791 2006 25.083796079128845 2007 21.465431444383388 2008 15.38326899510217 2009 26.800552762499663 2010 7.9020493170558925 2011 5.475067896112665 2012 10.018100422260105 2013 15.936219640604685 2014 3.94497601036623 2015 13.579164675122405 2016 26.393661556986718 2017 3.8003097869478664 2018 4.062750955935216 2019 1.7784416804249752 2020 15.445786508509965 2021 0.27339849476271005 2022 3.6212725928502665