Year annual % 1965 11.4249999996678 1966 12.2429137683409 1967 7.29610874230891 1968 0.391231447309205 1969 9.78597055547384 1970 -5.29637142204704 1971 -3.10384940810851 1972 -0.251023192089008 1973 7.970895563186 1974 7.45845156082894 1975 9.11920030145642 1976 5.47921527968846 1977 6.28021302750907 1978 29.3797941641698 1979 -6.03902875017094 1980 9.73428879471392 1981 11.1997226074894 1982 10.2588088556284 1983 10.6052036199096 1984 12.4776272053182 1985 9.13844055467156 1986 3.29098104561558 1987 4.35571687840289 1988 6.08695652173909 1989 1.51183970856093 1990 8.45146240803882 1991 11.8960953011251 1992 9.35975158953135 1993 11.0735532720389 1994 5.11259890444314 1995 7.23798494499129 1996 4.02807775377963 1997 3.55029585798821 1998 3.70927318295739 1999 2.64862252295818 2000 -2.90000000000024 2001 -8.81393752145546 2002 -9.79764705882357 2003 -2.19115191986644 2004 -2.197567740559 2005 2.65020576131657 2006 1.45926876202724 2007 6.25098782993553 2008 10.3607288954998 2009 2.45990025609948 2010 2.79989500109268 2011 15.5184815317561 2012 6.05980392156864 2013 2.60581802719517 2014 2.43294141599225 2015 10.4022933588151 2016 25.8538742124461 2017 25.8036184788338 2018 13.1702038536721 2019 -2.16217883470595 2020 1.44703656998741 2021 2.86833027751019 2022 4.51030149235703 2023 2.37317531435169