Year annual % 1961 13.408242947846531 1962 -2.6971600727749774 1963 3.8373151304938062 1964 1.6711881718148192 1965 15.416304748200815 1966 -2.9684134034314837 1967 2.1238610098066175 1968 3.066649118721301 1969 1.5612985156179917 1970 6.8786654155230735 1971 -1.5054730803280165 1972 1.9402567820672374 1973 1.5055398208693873 1974 2.4283323408761817 1975 -0.42264240687335075 1976 1.4909935088950306 1977 10.671834725170925 1978 5.485100752053 1979 -0.3530568198197699 1980 -4.460063604483537 1981 -11.004077258062836 1982 -12.060371232341296 1983 2.709898014769891 1984 4.317958319554265 1985 1.4694377866276227 1986 2.4289083623483947 1987 1.0079429161886821 1988 -0.46630845594712866 1989 2.4797533224163004 1990 1.5302864916553602 1991 -3.433255613008214 1992 6.9151179031900085 1993 6.817391868203799 1994 2.6431868558576923 1995 -0.1800315605209164 1996 -0.5878416775017712 1997 2.4730912652943147 1998 2.297128111956056 1999 -0.34271132499019075 2000 -1.0079720304842539 2001 0.4817384015819215 2002 3.7540050377236014 2003 3.2162507145754518 2004 1.0063289631345071 2005 3.283659816053614 2006 3.66278642015088 2007 6.172606979255676 2008 4.49494656359289 2009 -1.0721252185503403 2010 4.53596859278214 2011 5.521180808086427 2012 5.971765467569682 2013 0.738541695200297 2014 3.6790062393994276 2015 3.5860288637100695 2016 2.7053821138394625 2017 4.526574727735991 2018 1.0007466390987076 2019 0.8154471571455417 2020 -7.637619812939803 2021 7.6964348501053195 2022 2.889568507669523 2023 4.772525947653733