Year annual % 1970 4.198951616072378 1971 2.205707554393868 1972 2.697081830216092 1973 5.26629013807387 1974 0.7895392829255741 1975 -1.8158497608549595 1976 4.6104118002273395 1977 1.3342662138582426 1978 1.4871522617111026 1979 1.0078587152517997 1980 2.644146607976566 1981 -1.0679290066134541 1982 -1.3066658254176247 1983 1.9422275163743592 1984 3.681069689239621 1985 0.04766809133593597 1986 2.057363982063748 1987 0.9674925879213276 1988 2.3121558888613123 1989 4.01797985549419 1990 1.891305007626272 1991 2.0914052587982894 1992 0.08453753308891976 1993 0.9794936152893712 1994 3.112545548635211 1995 3.6408150040166447 1996 3.5526756619952238 1997 4.139116644140287 1998 3.0402815259405855 1999 5.123617030498579 2000 3.4203493054635743 2001 0.23545262641455622 2002 -0.633547274483945 2003 1.000281785120194 2004 1.1773814482277913 2005 1.8495024473120338 2006 4.4650836608927165 2007 2.886601453748 2008 -1.974166992634153 2009 -3.07222343646157 2010 2.9810666841316475 2011 0.9516356545766484 2012 -2.049380768407417 2013 0.03293993298009923 2014 0.4145898726645356 2015 2.2326468458897324 2016 0.27897062835357644 2017 3.619069306370676 2018 2.3998846917412635 2019 -0.2075409317408088 2020 -5.634101783345486 2021 10.775600188650031 2022 -0.3041862180139674