Year	annual %
1961	0.975560416194169
1962	1.17925041733988
1963	1.07589454898741
1964	1.0193768189543
1965	1.03418755017895
1966	1.16012029007614
1967	1.36455025976303
1968	1.58462686147441
1969	1.7507310647086
1970	1.98389761258481
1971	2.09561967512327
1972	2.01055122779243
1973	2.00488017405139
1974	2.06054295897092
1975	2.17131649043641
1976	2.34453492381319
1977	2.49036006382106
1978	2.57997016224474
1979	2.51297351728444
1980	2.28177638731861
1981	1.9961962365056
1982	1.76015658605825
1983	1.68880284063265
1984	1.78332193938655
1985	1.99908127582919
1986	2.18867313473166
1987	2.3974744703207
1988	2.5677701999724
1989	2.52817852244515
1990	2.43758599564694
1991	2.2521050265006
1992	2.06172975192445
1993	1.99667823800349
1994	1.91933200559674
1995	1.8283458996282
1996	1.73940747787607
1997	1.6435836607293
1998	1.53834770321806
1999	1.43327335130049
2000	1.33511835347824
2001	1.7546971939805
2002	2.42025464283049
2003	2.58312205225329
2004	2.52695179043068
2005	2.49436027695914
2006	2.47107150320897
2007	2.45564683066573
2008	2.4192031021932
2009	2.34241055303069
2010	2.22622485286332
2011	2.12185633623001
2012	2.06407872618616
2013	1.99808044739302
2014	1.91185977393148
2015	1.81982389154769
2016	1.72916107570727
2017	1.64978976233713
2018	1.57759960331955
2019	1.52840326719874
2020	1.86599449843616
2021	2.02203616729568
2022	1.89711496901471
2023	1.94938626026079