Year annual % 1975 -3.000551646870477 1976 16.216553429164165 1977 7.342598984501052 1978 3.372118330878621 1979 18.67238129988263 1980 -9.951293919499577 1981 -22.378560796389777 1982 0.5726101125711267 1983 -2.836750062739725 1984 -2.7548272348484346 1985 -4.7890409828277285 1986 -5.973315364726574 1987 -1.3797024629845822 1988 -2.200972031378498 1989 -4.228006455224602 1990 -2.0394237739455576 1991 0.11417078847395601 1992 1.905263672507914 1993 -2.2661649153605765 1994 0.5937469937649524 1995 1.9769219592822935 1996 0.49313577982069035 1997 -3.6791560133327437 1998 -2.7131904526490445 1999 0.8801669898582389 2000 0.7300694509954724 2001 0.6870369713027458 2002 1.8646857286271086 2003 0.9908827458146447 2004 -1.284601230722103 2005 -1.3250510999311587 2006 2.6920521206136954 2007 -1.416167646899268 2008 -3.423745708574728 2009 -3.209963091116208 2010 1.1114798258206093 2011 2.3363151965061206 2012 -0.35975494439166766 2013 -3.330844834723038 2014 -3.6675189324305677 2015 -1.522384231884061 2016 -3.521143981982803 2017 0.32020543877322893 2018 -0.8688600568667226 2019 2.9742261522544027 2020 0.29171891700163144 2021 -2.396821562880959 2022 -2.4234077025460294 2023 0.6178157381090017