Year	annual %
1961	-0.5778889182065967
1962	0.6819515873202704
1963	1.810945862992213
1964	1.7005680718669112
1965	2.3494674949387786
1966	2.5779162028347855
1967	2.362213945533526
1968	2.3900975048198063
1969	2.4843469941081935
1970	2.4844225758421175
1971	2.4981215083421944
1972	2.2412612417241746
1973	2.004277515016355
1974	1.741490935689498
1975	1.6721657169202615
1976	1.4125108956568653
1977	1.304532790152308
1978	1.017325695752774
1979	0.7122047653181482
1980	0.6075390944256185
1981	0.5848898766300294
1982	0.6947591897656054
1983	0.7849096721455311
1984	0.6518861453900513
1985	0.6471016174442354
1986	0.6782040829994997
1987	0.7113097437775764
1988	0.6852717245242417
1989	0.6024356614647672
1990	0.5255180971474971
1991	0.38382799581569316
1992	0.25816438485406934
1993	0.17069324335825797
1994	0.10569839428002581
1995	0.023102762223174977
1996	-0.03698958529737695
1997	-0.08414174910257088
1998	-0.17596441812337105
1999	-0.2975063385800496
2000	-0.42878471443928845
2001	-0.8117034822095235
2002	-1.053726143866058
2003	-1.1356525876014274
2004	-1.2130550738049095
2005	-1.2591813063736481
2006	-1.24609055774026
2007	-1.2693090314227646
2008	-1.3197423825441774
2009	-1.370786335111191
2010	-1.4192617114446335
2011	-1.2317472208553397
2012	-1.1125750499465283
2013	-1.1556848332791816
2014	-1.2247260067649393
2015	-1.2939700249804673
2016	-1.3359821673977024
2017	-1.354670203772784
2018	-1.4514040248887028
2019	-1.5204245775075265
2020	-1.5943671688288532
2021	-1.710672902613112
2022	-1.7725566641454549
2023	-1.7669944805810616