Year annual % 1961 0.8288436088996605 1962 -0.2377893765022776 1963 8.82109732494088 1964 7.766033336279591 1965 9.600158918090912 1966 4.54524246930481 1967 5.009885133961475 1968 10.152012232729518 1969 8.810872814655553 1970 5.505166601006238 1971 3.4348708885115258 1972 10.311416738563082 1973 2.5311687511200915 1974 4.965016751544482 1975 0.11377342058153772 1976 12.596608833565995 1977 -1.6522300436256785 1978 -5.383804039618639 1979 -3.6696836538966267 1980 -7.714268206294264 1981 -5.937988134387879 1982 7.895515039285755 1983 1.2745011487224502 1984 -3.614945241065044 1985 0.7379000227793853 1986 -5.824655726587707 1987 -2.805571595769891 1988 -2.0089204854057243 1989 -0.3209920413676173 1990 7.846864390201617 1991 -2.1975828576171352 1992 1.924858296452797 1993 -0.6534199810475911 1994 -0.02870805697013168 1995 0.41073459099108334 1996 4.104823389860385 1997 1.8174238435043577 1998 3.810408568470237 1999 2.2579604922073173 2000 4.101186973141196 2001 0.8700282170757845 2002 1.4141993739809493 2003 0.41998283337656517 2004 5.587271167789922 2005 2.4179992148535945 2006 3.335708496577297 2007 4.04444645554139 2008 1.7480392290493967 2009 0.5709174414661362 2010 3.3258277045504485 2011 -2.8462338542227315 2012 1.6612516061350107 2013 -1.5320939795013118 2014 -0.1972402162784448 2015 -1.267729399695554 2016 3.4801248126556743 2017 1.416601571423854 2018 0.10320758311570444 2019 -0.5980580649291483 2020 -5.847190350710889 2021 4.641257979228314 2022 2.8802202881343106 2023 1.2556515966988968