Year annual % 1961 5.245271884456486 1962 4.02668562348731 1963 5.840140139907277 1964 2.557220538488153 1965 0.9502725052858381 1966 11.236242456381746 1967 3.6159998540523475 1968 3.592013329541288 1969 3.9379832809683677 1970 1.8289669701924112 1971 9.42268621105768 1972 -1.019947794122075 1973 -5.029248356026244 1974 2.38214933308889 1975 -12.912101050878235 1976 3.8325840045835946 1977 10.444686378966779 1978 7.701103602541991 1979 8.418304687177923 1980 7.986620757061004 1981 6.525370366415913 1982 -11.014305060156289 1983 -5.0174205254242565 1984 4.103683239232396 1985 4.009916202531528 1986 5.37769232259177 1987 6.460468528202682 1988 7.345110454169188 1989 9.92338289722963 1990 3.3335654744456065 1991 7.804392186362492 1992 11.166707732399047 1993 6.588783826631598 1994 5.030197978567344 1995 8.933295869285658 1996 6.80291659568033 1997 7.391739267802521 1998 4.180886627249109 1999 -0.2736313977560627 2000 4.971621488500304 2001 3.1540349243740025 2002 3.2027991398553297 2003 4.723245266811162 2004 6.674254167459722 2005 5.837045715257446 2006 6.049990829043821 2007 5.168230987224291 2008 3.7893928023371046 2009 -1.1180372326977022 2010 5.851651017309493 2011 6.223896786938511 2012 6.155340020964587 2013 3.308508244691126 2014 1.7926494736180558 2015 2.151942498536343 2016 1.753038745533047 2017 1.3576953779721066 2018 3.990029475216758 2019 0.6343675338284385 2020 -6.143474792240923 2021 11.333957069191115 2022 2.058740080953328 2023 0.2187806669015515