Year	annual %
1961	1.03527111034878
1962	1.79859409061968
1963	1.88686298616231
1964	1.73332420521388
1965	1.57819186815029
1966	1.04138496835584
1967	1.06106038020338
1968	1.55010681784845
1969	1.61415274319724
1970	1.50218612026628
1971	1.81432296308953
1972	0.217554194766688
1973	-0.541712398569686
1974	0.974731946293873
1975	0.523061566354982
1976	0.180887604258723
1977	0.0401528490494618
1978	-0.750843017063698
1979	-0.33086676683633
1980	0.128425253885878
1981	0.396400559512914
1982	0.985513282103748
1983	0.702386211025075
1984	0.515344312241777
1985	0.506154022821026
1986	-0.0320919010001208
1987	-0.793117356944721
1988	-1.46456011402408
1989	-1.56456290964139
1990	-1.05153583877637
1991	-0.688056323323484
1992	-0.340600020579915
1993	0.268553408849753
1994	0.229122133675804
1995	0.351314684120746
1996	0.800841487823614
1997	0.443290344067027
1998	-1.70475050957122
1999	-3.55373781613171
2000	-4.07538613162288
2001	-3.6617798581649
2002	0.122361119924304
2003	2.06210246711066
2004	1.72502952808587
2005	2.55007380740239
2006	2.56811425717747
2007	1.97486219793502
2008	1.25822530732751
2009	0.65115206175087
2010	1.26551415533004
2011	1.42089766276671
2012	0.829929595036991
2013	1.13367890654299
2014	1.34764139563651
2015	1.31959390251523
2016	1.06031644056836
2017	0.319536038312865
2018	-0.525178744011738
2019	-1.19643951751799
2020	-1.59676619476798
2021	-1.6777912474095
2022	-1.56965834139861
2023	-1.43292207278827