Year annual % 1960 -0.0389741990030698 1961 -2.68247036807419 1962 0.0961538463947943 1963 1.56900416258926 1964 1.75756620405747 1965 0.456974672917124 1966 -1.18735543593374 1967 1.46691635472379 1968 2.53768071348792 1969 -0.194990250038154 1970 2.81785392208514 1971 0.445808667692475 1972 1.53521536678872 1973 6.39197420311837 1974 16.8990368422354 1975 19.0884996543863 1976 7.03468963198825 1977 11.8202775391489 1978 13.2751232921383 1979 14.0560247361062 1980 17.3669682564025 1981 14.7971516299733 1982 11.7288868654679 1983 13.3143177303524 1984 11.5071695057309 1985 22.3283750554416 1986 31.9350161472763 1987 24.8645003373125 1988 19.7611617858858 1989 17.6340799385345 1990 23.9991651130861 1991 14.4026748806266 1992 11.2144813801987 1993 18.5066883302714 1994 10.5858066526451 1995 10.0296564501018 1996 9.78892040179966 1997 4.49013627855204 1998 2.54705977554151 1999 0.514827130192979 2000 2.27128756828723 2001 3.7508205747202 2002 1.86552503610077 2003 2.1203909173333 2004 4.45194392395045 2005 4.69094870903769 2006 4.03712359429612 2007 4.57808572377153 2008 6.70792293515939 2009 1.05595029731201 2010 1.17933576873673 2011 5.1289237668161 2012 1.72973481581383 2013 0.757669184522973 2014 1.14134467538233 2015 -0.731384487387957 2016 0.60404908699661 2017 1.0123540331558 2018 1.09033000581892 2019 0.0753241350024612 2020 -0.371590212324095 2021 3.46692585313082 2022 7.19861615609867 2023 4.04554694222477