Year	annual %
1961	1.2906755413217237
1962	1.3808082358184157
1963	1.1839182829854495
1964	0.6237455648792983
1965	-0.14980578315580675
1966	-1.0433178612878342
1967	-1.7889135110332102
1968	-2.1619029537489145
1969	-1.9794734667500282
1970	-1.4023037719066054
1971	-0.6681646650432052
1972	-0.08410418128079834
1973	0.257999533685479
1974	0.23139107363834066
1975	-0.039866061266211464
1976	-0.3796566741048324
1977	-0.6251687697304984
1978	-0.7750104596707689
1979	-0.7725530496693934
1980	-0.6737630746021321
1981	-0.5354067682875818
1982	-0.47824258650008267
1983	-0.5557553028640173
1984	-0.812998856966593
1985	-1.1767370598465954
1986	-1.5990825547697576
1987	-1.961942055617336
1988	-2.2085226170309267
1989	-2.275161733906796
1990	-2.223663366512621
1991	-2.07379115178838
1992	-1.8612170279145117
1993	-1.8581708581447802
1994	-1.9783861960435547
1995	-2.1696375165602104
1996	-2.3867074980476657
1997	-2.548499160716546
1998	-2.6605243899584
1999	-2.669523297283534
2000	-2.6182606912662902
2001	-2.076533755048792
2002	-2.125975717974584
2003	-2.1696071223151296
2004	-1.2878679117527878
2005	-0.7483971689279438
2006	-0.7802640743266085
2007	-0.7692193728763022
2008	-0.7383435477823552
2009	-0.7013728845884302
2010	-0.7382854794681674
2011	-0.8249958077137554
2012	-0.8547469693100082
2013	-0.8533424350040959
2014	-0.8653445330389482
2015	-0.9189529536894565
2016	-0.9611666474363937
2017	-0.9863104108804539
2018	-1.0309965678611588
2019	-1.0525029370254841
2020	-1.1502950860004768
2021	-1.382790761008965
2022	-1.379276441578357
2023	-1.2356172248473811