Year	annual %
1961	5.195137552689829
1962	2.721544040167373
1963	-6.358610301008824
1964	1.0423848308519297
1965	0.7757505142835726
1966	-1.555241791922242
1967	-0.34349193040070247
1968	4.262739213174498
1969	4.10262681357969
1970	2.8247279187263814
1971	4.694453479193996
1972	5.8814721018686384
1973	2.760446640286034
1974	5.3627622877449
1975	4.169491723503029
1976	-1.9647206711623255
1977	-11.054312163429358
1978	3.422940091337395
1979	5.940170591920008
1980	12.486750032743572
1981	18.02416393626399
1982	18.991647391588245
1983	1.7826652296905223
1984	7.040402243948634
1985	-3.6776685030636855
1986	-3.792264700756675
1987	-2.784011385286192
1988	-8.810371361373072
1989	-1.4966135927004984
1990	-5.74452945218124
1991	0.7295127761768612
1992	2.370887145182124
1993	-8.486106638172117
1994	-5.582553257346817
1995	-18.69804282346915
1996	0.9560766425170044
1997	9.836937790339405
1998	10.125834434355482
1999	-16.255216396541286
2000	-7.2015518162331915
2001	7.563217365065952
2002	2.3441357759885477
2003	-2.895243022882923
2004	-4.916987964778258
2005	12.213409476252707
2006	16.528882374761196
2007	-9.83690858005123
2008	4.677340013639281
2009	16.02532859657073
2010	3.2773510138649016
2011	-3.8929062900459
2012	12.689016636529459
2013	0.5441521922735433
2014	8.444404850664043
2015	-3.8511947559778434
2016	-13.014723686536371
2017	-15.673939529089253
2018	1.421771611096318
2019	-5.442172218825576
2020	0.8265843067091225
2021	-4.451244334588097
2022	-4.407738534202707
2023	1.6488063245711118