Year	annual %
1961	0.4715610803797574
1962	4.086872530438939
1963	13.349294925141436
1964	-5.894018839645113
1965	10.69264951017152
1966	-4.851778704182237
1967	-5.925258882636911
1968	12.059340183653958
1969	3.29174112061294
1970	4.979330597167575
1971	4.129962444518753
1972	2.4358413728682535
1973	-0.9681247183355026
1974	5.342375689499264
1975	4.152709188527837
1976	6.080396229286109
1977	5.952286610572074
1978	6.5178170231426975
1979	5.201277480741126
1980	7.938538080830625
1981	6.355754591958586
1982	5.603876425566327
1983	4.391092679887976
1984	4.93272802618057
1985	2.8510002386845628
1986	-1.0573487569827194
1987	-4.005631786064313
1988	-11.352439476817551
1989	3.6952974226782658
1990	2.816933273291582
1991	-0.6506169086208189
1992	9.660942453467825
1993	6.039410226631986
1994	7.477958358345276
1995	6.948051437029946
1996	6.442715347139966
1997	5.651582963048526
1998	5.866213153289053
1999	10.945129981710437
2000	13.74593055612263
2001	11.343997069960537
2002	12.025513434031481
2003	13.843996890379756
2004	13.564661616341553
2005	13.56895002164562
2006	13.076101379237244
2007	11.991435240214642
2008	10.255305392980787
2009	10.550009096193165
2010	9.634439452044404
2011	5.591482378236606
2012	7.332670447041494
2013	8.42600102501767
2014	8.169907455582774
2015	6.9928402902612135
2016	5.86247291518572
2017	6.136108243603047
2018	6.268862214710751
2019	6.579110067654142
2020	-9.04834717984643
2021	-12.016372482917674
2022	4.0374934360085035
2023	1.0022383428977264