Year annual % 1961 3.3634394757010284 1962 3.373513418894916 1963 1.603524027705049 1964 3.284962891577919 1965 5.606794396099573 1966 4.981536387873135 1967 2.77946176966131 1968 3.931299671112072 1969 6.022037583675569 1970 9.248550940624753 1971 7.985624421129117 1972 7.1882518645740845 1973 8.414878602257374 1974 15.059212454675432 1975 25.770728012169485 1976 15.11356732629261 1977 13.710494111084273 1978 11.457546965979532 1979 14.066541322902879 1980 19.703794674042115 1981 11.569262902313142 1982 7.418774840885618 1983 5.122809539414547 1984 5.030047501928209 1985 5.511697933931984 1986 4.335355978680994 1987 5.4405491149796035 1988 6.133173327452312 1989 7.935862149563079 1990 7.886218073396535 1991 6.4190864809900745 1992 3.3209792958422497 1993 2.733044224669001 1994 1.3936235859993502 1995 11.489003134605568 1996 4.137276529760442 1997 -0.14709803124262066 1998 1.2722849580858622 1999 1.3731386699952424 2000 1.143887865389388 2001 1.5053486137881436 2002 2.12273820234752 2003 2.392776139498821 2004 2.620096380675193 2005 2.935328139921296 2006 2.7868336449573547 2007 2.2525153793569785 2008 3.403280075316516 2009 1.8911119347340417 2010 1.5837413266822438 2011 2.1891847208401742 2012 1.538803627712241 2013 2.1170639750210256 2014 1.3177782136091878 2015 0.6609905214135239 2016 1.9647982740778502 2017 1.8565410466793537 2018 1.9220523935836553 2019 2.1157327429386754 2020 5.083623429060765 2021 -0.12042708549165582 2022 5.146315090412941 2023 7.1194774165036705