Year	annual %
1961	-0.7101568998242208
1962	-0.526995924517393
1963	-0.5497290727746885
1964	-0.591071634947783
1965	-0.6197963621864852
1966	-0.6486113392339141
1967	-0.6640242323831785
1968	-0.6985500944730648
1969	-0.7145848097881182
1970	-0.7077524411806505
1971	-0.5265845982011147
1972	-0.4670158974885162
1973	-0.4266971045033383
1974	-0.3821104368792884
1975	-0.4310835378600081
1976	-0.5181771741784941
1977	-0.5115609412631562
1978	-0.5216778139499435
1979	-0.5326864123576669
1980	-0.5598487180631259
1981	-0.9402504911924409
1982	-1.1358085277923333
1983	-1.1561579880061488
1984	-1.2014993241293142
1985	-1.2355285526697244
1986	-1.2465831096021385
1987	-1.2615724483719524
1988	-1.2853927252341169
1989	-1.3113728719431372
1990	-1.354077223987279
1991	-1.2543869358029378
1992	-0.31574202446456184
1993	-0.3420768874829554
1994	-0.3657895004131409
1995	-0.3913061637568768
1996	-0.4609975910906873
1997	-0.518294348008762
1998	-0.561669179911022
1999	-0.5797809996408017
2000	-0.6014454561149302
2001	-0.6380830473505882
2002	-0.63719837221373
2003	-0.6596466374632782
2004	-0.686085060253733
2005	-0.6673042540922367
2006	-0.6751215060934215
2007	-0.7020679916669114
2008	-0.7246761587439035
2009	-0.7004420426023051
2010	-1.4562770259473854
2011	-0.399747599889796
2012	-0.3277045301586825
2013	-0.3329788027291491
2014	-0.37403554187490257
2015	-0.3939923787451932
2016	-0.4128926286158151
2017	-0.43067305139085954
2018	-0.4615303702185587
2019	-0.506115918707072
2020	-0.539581529777376
2021	-0.559558889997761
2022	-0.6042719654385313
2023	-0.6235855907234233