Year annual % 1961 2.9900634646976556 1962 3.0048198149283962 1963 3.0139171557781737 1964 2.9061779508730012 1965 3.0788678046785236 1966 0.04160322401803285 1967 1.2277518339989086 1968 5.79379997879829 1969 1.8539178476498108 1970 2.990848310386852 1971 -0.9410938712230461 1972 2.5116164284507505 1973 13.22796896831278 1974 26.694171334851717 1975 4.313953662247712 1976 18.222973247537766 1977 28.75129183398778 1978 4.43330463446982 1979 6.54139713343109 1980 24.14367710911675 1981 2.976991158376393 1982 8.301317589562004 1983 9.046781909466304 1984 17.909895891775605 1985 0.3436570647720174 1986 -2.0204048360965032 1987 -4.07520680060972 1988 -0.38092601495539213 1989 -1.0124065238401698 1990 -4.523273542830836 1991 0.663489267146474 1992 -0.02383713726509029 1993 6.154194290898829 1994 46.38606943541896 1995 11.043789851394052 1996 56.28377627389659 1997 3.921474201352197 1998 5.387361390656963 1999 -0.7759119294433816 2000 1.6010172872691726 2001 6.875968797426452 2002 4.582137352165546 2003 3.2781206928541167 2004 -2.503357520043849 2005 1.2151349397056208 2006 1.359538259600896 2007 3.0885494457229186 2008 5.3729334850033865 2009 1.2077792972368826 2010 1.5162179241976048 2011 5.709320500056791 2012 -0.4040983607408748 2013 2.876730428525164 2014 4.407332355720754 2015 4.775682372708275 2016 -1.1798324356569623 2017 -1.04167724810101 2018 1.6819764716421446 2019 1.983352492503741 2020 1.8283830939615626 2021 3.9301313753230147 2022 2.0858985890634756 2023 2.4851771031609786