Year annual % 1961 3.1157092376586917 1962 6.727683816366209 1963 8.909672462104453 1964 4.581452774007261 1965 3.8898317014063366 1966 5.3674745043695395 1967 2.1203856495519062 1968 6.392404385536011 1969 5.911105776259106 1970 15.302183282878133 1971 14.518766729624957 1972 6.57683199239662 1973 17.107839423524894 1974 32.89028415672328 1975 9.479603941309023 1976 8.382849693236196 1977 8.366804655470787 1978 9.356153130077672 1979 14.940967594611877 1980 14.234592513241282 1981 11.764746993747949 1982 8.643508074509427 1983 14.248217775795055 1984 52.959450719558305 1985 17.06101474091753 1986 2.8919363881342264 1987 7.497125853514149 1988 9.759959118608293 1989 9.099941450265291 1990 12.956838354490955 1991 16.395119643651483 1992 7.8818638109708274 1993 6.809621986567677 1994 10.060230510794696 1995 7.64230385497558 1996 7.688965478462279 1997 6.259815755793994 1998 10.405670361417279 1999 6.3346397302426425 2000 5.816933559372757 2001 5.618862265762644 2002 4.231091813720582 2003 3.1921313294937192 2004 5.890758534069533 2005 5.910893447854093 2006 5.111586662950373 2007 3.1642897549487543 2008 7.17921618315836 2009 2.7382585664238235 2010 4.37088435978275 2011 3.918805781105064 2012 1.9941761010012726 2013 2.061063350422927 2014 3.0530553080051277 2015 -0.719682789326697 2016 1.2803117382458993 2017 2.320259946801457 2018 3.7406538308698742 2019 0.6970763010453425 2020 1.6504901854718952 2021 2.2824784602485977 2022 5.488648202020087 2023 4.596485061907686