Year annual % 1961 0.02606811195771286 1962 4.370538159853552 1963 2.005373787292399 1964 2.550705867300792 1965 3.4527676921233876 1966 3.510418992429692 1967 7.115560626664319 1968 7.065887663939947 1969 2.2853405995960685 1970 1.0979443763347092 1971 -0.9702007839400295 1972 3.4445188486186282 1973 5.7697936621692065 1974 2.1502168301070554 1975 2.7778499203835025 1976 5.284512641376594 1977 5.527103426864784 1978 3.992628117860292 1979 5.040706330657656 1980 3.186214111612884 1981 0.029922702148255098 1982 0.16349637753148727 1983 5.445694378708083 1984 2.4058957381672457 1985 -0.48650554628466125 1986 1.6503130735074194 1987 6.724004418161883 1988 6.855088280447916 1989 9.337151678556623 1990 11.030317396551453 1991 3.783852767293453 1992 7.095961247725867 1993 6.848029562557116 1994 6.341013085195229 1995 6.794565680297083 1996 3.6618227384307147 1997 -2.667843295236736 1998 -11.299325480714444 1999 2.9036886839838587 2000 5.978312821435793 2001 4.925188773792115 2002 5.274738928825556 2003 6.427620254041358 2004 6.549581705217207 2005 3.393181718604808 2006 2.028695415867034 2007 0.4235713832151191 2008 2.067484500973734 2009 -1.608586523187654 2010 4.745611401441991 2011 1.1783673953269727 2012 6.64332607092355 2013 0.3423944762457296 2014 -0.016215872977582535 2015 2.1175356419378346 2016 2.425327844459062 2017 2.6645460007572694 2018 4.236545530665055 2019 3.70344862507082 2020 -1.0142630854899153 2021 0.42740916618755875 2022 6.018272234667151 2023 7.1245922486369295