Year	annual %
1961	1.53260613603588
1962	1.0576534413945
1963	0.989440824312753
1964	0.863701746923404
1965	0.814360720819285
1966	0.84216219675292
1967	0.820473288801262
1968	0.754994869076767
1969	0.688428297949465
1970	0.62350265585546
1971	0.561618697250031
1972	0.496427968345348
1973	0.475228591612223
1974	-0.326332363271116
1975	-0.557065744166412
1976	0.600689675744346
1977	1.15623812596797
1978	1.14528107184778
1979	1.14348057009352
1980	1.14232983393901
1981	1.14791120983013
1982	1.30940422806958
1983	1.60293635705018
1984	1.7098769599148
1985	1.65175024334007
1986	1.59747416196886
1987	1.54494296244591
1988	1.49743207223701
1989	1.448208087335
1990	1.39304413756299
1991	1.33048818808073
1992	1.41289166336657
1993	1.90116193072313
1994	2.2100598397478
1995	2.10616492997985
1996	2.02477424691791
1997	1.95929934714224
1998	1.89716036586914
1999	1.83511264888196
2000	1.77009330000432
2001	1.73474490066302
2002	1.78369248341346
2003	1.83163728954308
2004	1.81616594339173
2005	1.78801171115289
2006	1.75641313375661
2007	1.73158929128947
2008	1.70962168593317
2009	1.68691516238933
2010	1.67026099599159
2011	1.35400253526204
2012	0.996688012391421
2013	0.8962308711661
2014	0.855564798922502
2015	0.870039642466962
2016	0.888918593369278
2017	0.884479029885329
2018	0.849324982193926
2019	0.817517719721429
2020	0.705573414651573
2021	0.535999429698235
2022	0.585013504929064
2023	0.688799542570149