Year annual % 1961 1.7898133047037135 1962 0.9920448411221656 1963 2.8244951493035586 1964 5.233108971429232 1965 -2.828985119894341 1966 -1.026240667743096 1967 3.738653809982466 1968 2.228693630533016 1969 3.358654271956425 1970 3.5128919723321275 1971 -1.531467318010968 1972 -3.8815365552464556 1973 1.4960181661170822 1974 0.12255367609337497 1975 4.442711628563316 1976 0.30055333771754533 1977 3.8266518594798526 1978 3.7285282033295886 1979 -4.749915733082133 1980 4.055482254285096 1981 4.005674959113506 1982 1.4652379169824314 1983 4.153927187798416 1984 1.7980036534742254 1985 3.0111631223310695 1986 2.4175608320978483 1987 1.9027229875242995 1988 5.921204855484646 1989 3.008933543074548 1990 3.0730000972551466 1991 -0.09527121369129077 1992 3.5075560930041547 1993 1.9947557687986546 1994 3.6252552480154066 1995 4.581358947700977 1996 4.529530364559633 1997 1.614387827358584 1998 3.3530670055936866 1999 5.406978204697069 2000 2.1092518557313014 2001 2.3677781710309347 2002 1.752066282692482 2003 5.212397152562232 2004 5.67938406647994 2005 5.828042862037535 2006 5.925862471301315 2007 5.550958397207765 2008 1.8085972423651668 2009 5.400788073849455 2010 5.805525994533795 2011 3.552625759974589 2012 3.9129311787175425 2013 4.602006640733691 2014 5.486592969003226 2015 5.951958507857441 2016 6.485163906311612 2017 5.222753616159508 2018 5.086630236734706 2019 2.748394909732511 2020 -5.643700858473792 2021 7.655545540323814 2022 5.346414023596438 2023 5.2994191636849735