Year annual % 1961 0.19179548957242787 1962 4.102992588679854 1963 8.57861891529707 1964 4.950488666041551 1965 4.884976834129006 1966 -4.250514184154952 1967 -15.743628208205095 1968 -1.248360245812023 1969 24.1973839456806 1970 25.007241929389565 1971 14.237531556250957 1972 3.3642620350363472 1973 5.392760483959094 1974 11.160674545486145 1975 -5.227747555320832 1976 9.042351726302115 1977 6.024117849541668 1978 -5.7641583939028465 1979 6.759430935191759 1980 4.204831044272964 1981 -13.12788048505135 1982 -6.803388815348129 1983 -10.924085033938681 1984 -1.1156232171682348 1985 5.9130274591138345 1986 0.0609452742067873 1987 3.2001254670293946 1988 7.334025487587198 1989 1.9193812958954197 1990 11.776885934206945 1991 0.35835260166014393 1992 4.631192946076922 1993 -2.035118773991357 1994 -1.814924485256725 1995 -0.07266476393787968 1996 4.195924046601078 1997 2.9370994192489945 1998 2.5812541019293462 1999 0.584126892918917 2000 5.015934759311591 2001 5.917684649203679 2002 15.32915574095594 2003 7.347194967994852 2004 9.25055822917993 2005 6.438516525383193 2006 6.059428032029118 2007 6.591130360687345 2008 6.7644727778017 2009 8.036925100990672 2010 8.005655916286457 2011 5.307924202895123 2012 4.230061174931677 2013 6.6713353930617245 2014 6.30971865525467 2015 2.6526932954300264 2016 -1.6168689490652923 2017 0.8058866191022105 2018 1.9227573420065056 2019 2.2084292771488094 2020 -1.794253082744575 2021 3.647186540724462 2022 3.251681408270926 2023 2.8602149910836374