Year annual % 1961 3.4949377948214675 1962 2.0944969446706523 1963 6.125674926997576 1964 4.957697612471023 1965 7.673805395281661 1966 3.089915912381585 1967 2.6408946014585695 1968 4.376935175563119 1969 2.668720145718524 1970 8.322102221652727 1971 -2.1521568110625964 1972 -1.8166693310272137 1973 4.106332712000224 1974 0.6232721281322 1975 1.1860003452613057 1976 2.0060013027546404 1977 0.7623388829011617 1978 4.67048781361305 1979 0.24919830302299317 1980 5.818348808322682 1981 3.2513223797929243 1982 2.2215613851840743 1983 2.965681286971659 1984 1.7977059469044008 1985 4.138315668499743 1986 1.8349707081334259 1987 2.7430717204307626 1988 3.920326229019807 1989 1.4797183965051204 1990 1.070266491137616 1991 1.7216441781457092 1992 4.914473074272792 1993 -0.8127571646528224 1994 0.7688294730739784 1995 1.9092865681101756 1996 1.7009625191294617 1997 -1.9127909536602914 1998 -0.3722852309954021 1999 0.7390137009593047 2000 1.102322126550547 2001 0.49541184801360316 2002 0.052876798088206556 2003 3.1187453790967936 2004 5.447802213041314 2005 4.9858297048835 2006 3.8493189163629324 2007 2.2318833995236105 2008 -0.08058420558960222 2009 1.1914979070257345 2010 -0.7591299136370679 2011 0.5354245290823343 2012 1.1917268522041695 2013 2.7751162608152384 2014 2.659526507554517 2015 2.875424594930749 2016 5.298324298827566 2017 3.0547892200762305 2018 4.532445206131513 2019 0.8626742215863885 2020 -2.9702946497842504 2021 4.578160430501413 2022 2.8026910933554916 2023 -1.9428376607639137