Year annual % 1961 12.043536408011676 1962 8.908972995580669 1963 8.473642382793884 1964 11.676708196398124 1965 5.819707872982718 1966 10.638561559162625 1967 11.082142324692668 1968 12.882468138323617 1969 12.477894514497152 1970 0.3990506446627933 1971 4.698992042341899 1972 8.413547255175999 1973 8.032599974950386 1974 -1.2252398277843213 1975 3.091575916220222 1976 3.9749840912121073 1977 4.390337950325616 1978 5.271941502907751 1979 5.484041832486611 1980 2.8175912076160046 1981 4.260624493468626 1982 3.2797427428672847 1983 3.6301985722467123 1984 4.410880153615352 1985 5.159807904712736 1986 3.2940476133705943 1987 4.648861397544906 1988 6.6616365220159395 1989 4.925785413063835 1990 4.8409290574523425 1991 3.523357235332284 1992 0.9005860663604608 1993 -0.45921971615079826 1994 1.0833831742994562 1995 2.6309996164489746 1996 3.1338709928044466 1997 0.9812287321322231 1998 -1.270330494639751 1999 -0.3339299577474151 2000 2.7646475514364823 2001 0.3861034261457519 2002 0.04196249931256091 2003 1.5351254992801273 2004 2.186115694421602 2005 1.803900872273715 2006 1.3723501276203791 2007 1.4839694116349165 2008 -1.2242890007282767 2009 -5.693236358822659 2010 4.097917919301366 2011 0.0238095237748297 2012 1.374750999208743 2013 2.0051001767726007 2014 0.29620551414262764 2015 1.5606266967490399 2016 0.7538267459035382 2017 1.675331751665027 2018 0.6433910234603388 2019 -0.402169200910933 2020 -4.147118899476922 2021 2.55932023865617 2022 0.9547369377813908 2023 1.9230555306471615