Year annual % 1961 -0.46554876213614066 1962 -0.483503512564797 1963 -0.4844739156329129 1964 -0.47263279697595667 1965 -0.833568546216692 1966 -1.20360210613313 1967 -1.2336506011887691 1968 -1.2008826852573449 1969 -1.167103063347297 1970 -0.5337989644262245 1971 0.026518360436799338 1972 -0.07367948286133125 1973 -0.07262740067995573 1974 -0.05754949969030847 1975 0.7433748442689052 1976 0.5187700007718046 1977 0.40038528243450816 1978 1.04986703867828 1979 1.0236747346800001 1980 1.057630936082771 1981 0.7453685729063136 1982 2.1548322674067264 1983 1.418482749133359 1984 0.030987595105357056 1985 1.7654968915670568 1986 1.758927900766677 1987 0.8230259303423326 1988 0.9530972160545788 1989 1.104060560358571 1990 1.1066879510419423 1991 2.823535086427026 1992 1.1573703516497003 1993 1.1224601552651132 1994 1.0586109086301922 1995 0.8190844600949243 1996 0.9146758895687646 1997 1.0973030931126284 1998 0.9782870478692132 1999 0.9105467467525669 2000 0.9522991808827388 2001 1.0460863371859468 2002 1.0300918975465099 2003 0.9318324879563914 2004 0.9363035494304438 2005 0.8919263041141847 2006 0.512737776078232 2007 0.4265921284875668 2008 0.7274277931330831 2009 0.8305551467753256 2010 0.5665664679901394 2011 0.4970495578323148 2012 0.9736082351705955 2013 1.4759897206776484 2014 2.068854908277019 2015 2.457410236372831 2016 2.3584956081057307 2017 2.8084999901921583 2018 3.561784371782533 2019 4.001157806796134 2020 2.2808249753547796 2021 0.6894819480313003 2022 2.4649747265673936 2023 4.1466606149402025