Year annual % 1961 3.229981919969191 1962 1.4597003879316617 1963 -0.6969355114501212 1964 4.369720102688589 1965 2.858712507884036 1966 2.2030952327471027 1967 1.6674009984813694 1968 4.412595627863098 1969 4.1855034385865935 1970 3.9191323146018107 1971 4.294525612660124 1972 4.599023142112429 1973 5.4232030780822384 1974 3.7395566909844007 1975 1.178922215754369 1976 3.0201065529999767 1977 2.4700383906559438 1978 2.1333309623477135 1979 4.959572383299715 1980 4.277086454287343 1981 -0.9357076397893138 1982 -2.252068920130938 1983 -4.311232288184186 1984 1.7687741473630467 1985 1.0692292018759133 1986 1.4538716105162877 1987 1.319606159370764 1988 -1.2950274101197152 1989 -0.18347006016324485 1990 -2.229048902288781 1991 1.0596268307019585 1992 0.7431926382922285 1993 2.57418023822666 1994 3.424618923759226 1995 -0.8588996891098617 1996 2.27754539398488 1997 3.720293305108143 1998 1.3901487835036477 1999 -0.8303448208858129 2000 2.1060019693555034 2001 -0.9541177550913176 2002 -0.8943014334447383 2003 1.1264332047654477 2004 4.108755616841535 2005 2.654572816622405 2006 3.8822106753031846 2007 3.973438227323257 2008 2.487188746193695 2009 -3.3442588787558805 2010 5.2801555478273485 2011 3.232197269623242 2012 1.437389434257284 2013 1.6623588265399718 2014 0.28131593055582016 2015 -0.617142608602478 2016 -1.3315582525083727 2017 0.9047213332687107 2018 0.6457467099939294 2019 -0.16586599405293612 2020 -7.401062371217407 2021 6.270555077561156 2022 3.3052646882962335 2023 1.4073607018683276