Year	annual %
1961	1.5375601156916059
1962	1.486024953709213
1963	1.4392910584631655
1964	1.3815523189063785
1965	1.315533220944254
1966	1.246681747967495
1967	1.169825230734741
1968	1.078099649623564
1969	0.9579369382615865
1970	0.8341320928873898
1971	0.789207481923475
1972	0.797418240964224
1973	0.7965056276612167
1974	0.826328946808992
1975	0.9054451534820189
1976	1.1657049975475982
1977	1.1155461467597592
1978	1.0410139529392035
1979	0.9709432692439041
1980	0.8936764421960435
1981	0.854633008026144
1982	0.8701897623983912
1983	0.8893361482134007
1984	0.90496197879202
1985	0.9245712106875439
1986	0.976694422249926
1987	0.9958815835450379
1988	1.0258161976282725
1989	1.0453051749477182
1990	0.9982596196197927
1991	0.9586830887973493
1992	0.9448389872046394
1993	0.9182240233594874
1994	0.9106682830880795
1995	0.9023122015572118
1996	0.8928785274643117
1997	0.9126363823573884
1998	0.873218354718891
1999	0.8176024522281456
2000	0.7137839644619461
2001	0.5627472420499094
2002	0.45428687214848756
2003	0.3930855356102189
2004	0.37763877677891516
2005	0.37511984900266004
2006	0.3894844889327466
2007	0.4328325913924102
2008	0.4575660627410007
2009	0.46462376398044264
2010	0.4710683474974897
2011	0.47716058868698147
2012	0.41623519334620723
2013	0.4073067009201574
2014	0.41698973729509387
2015	0.43365692855474947
2016	0.42534992846506686
2017	0.3475793831284511
2018	0.24003913193905227
2019	0.1363567754208006
2020	0.11293921897112186
2021	0.009647532300002499
2022	-0.01233435256135354
2023	0.09588699863762776