Year annual % 1961 -2.1106941838649154 1962 -0.023957834211787255 1963 2.4442846872753416 1964 6.760233918128655 1965 -0.3198948290972831 1966 4.480810656350288 1967 -2.693946247304476 1968 2.9025771858514227 1969 12.426856044290831 1970 9.087256349399167 1971 16.371859554748465 1972 36.137527970792604 1973 33.78678677055004 1974 5.991755577109602 1975 10.747485377441224 1976 18.288328920685963 1977 14.699102371555306 1978 24.7250516400473 1979 18.563037502873804 1980 9.205007996595441 1981 16.398434921981803 1982 14.05133729689449 1983 6.611129063377022 1984 20.35459638542178 1985 32.57310540332855 1986 24.92695434951274 1987 17.609104439037868 1988 108.93609625060621 1989 9.410893938667902 1990 10.225639882247533 1991 1.6188538621339552 1992 3.939634613029918 1993 6.179331404349822 1994 9.119141112725602 1995 9.39223549396321 1996 14.126498961730757 1997 6.625388444230111 1998 0.2873615602858155 1999 7.140950635731374 2000 1.5068384888212156 2001 9.078534171281586 2002 0.23559030655112317 2003 9.4998843810179 2004 3.5275016748272416 2005 9.487875408793954 2006 11.267283229473154 2007 11.141909869574476 2008 10.350836408972631 2009 -0.6329038205254829 2010 8.359182738875031 2014 6.709275525977211 2015 9.85032809850328 2016 7.6616105305132995 2017 7.301847653255211 2018 6.424772383691503 2019 4.711788247951618 2020 12.177942715723079 2021 7.0594340346914475 2022 1.8325450583824991 2023 3.5769485927443654