Year annual % 1961 6.18111172052933 1962 6.374099316236226 1963 4.072521770586306 1964 8.570281528862125 1965 10.268519808654531 1966 5.813757981235 1967 4.070461474606276 1968 4.359590250887038 1969 8.273457947791329 1970 10.84280577768233 1971 6.295192567370123 1972 5.643553371148897 1973 6.529264832446231 1974 2.6105325934143764 1975 -0.8798841646203499 1976 -3.3884486143306276 1977 0.8348156010921031 1978 8.549859334011003 1979 1.832395514935726 1980 -2.303451201184288 1981 -0.27482957165001665 1982 0.35294428867939587 1983 3.223163063542927 1984 -0.3547264521768625 1985 4.000190344099025 1986 4.693057068826917 1987 2.7704948317036013 1988 2.9092404844603124 1989 -1.4195798836063744 1990 -3.012169221812556 1991 9.546897710399136 1992 13.849085268948102 1993 18.202285952729767 1994 5.942109059677691 1995 -3.3124487782966554 1996 7.733695797963989 1997 -3.9043896563935903 1998 -3.7691132178345725 1999 1.8555539940881687 2000 -2.4948419926002288 2001 -0.1212886055647715 2002 -0.15890053308265806 2003 2.1641025022208282 2004 2.7211757409823463 2005 6.344795923096541 2006 5.409944091073072 2007 7.815189228623879 2008 -0.29645784588058177 2009 6.800421483220958 2010 10.12845407202316 2011 1.1075436261961613 2012 4.657119596862387 2013 3.824946328006746 2014 13.543770621654588 2015 6.578356323042755 2016 5.4895731527818725 2017 3.5346108175045856 2018 -0.27925228495995214 2019 4.480430621718881 2020 -3.167381176296388 2021 -0.7803287293208285 2022 5.165051326324459 2023 2.681010483797806