Year	annual %
1961	1.9154595446616582
1962	1.9711820672829674
1963	1.9895428527102865
1964	2.0076145680832695
1965	2.020950471721818
1966	2.0448213088742193
1967	2.0422071808157085
1968	2.040995784005702
1969	2.047627353908794
1970	2.0823738350399594
1971	2.0384547732973886
1972	2.001355948721084
1973	2.0542819332078466
1974	2.176295194256994
1975	2.2176595959636245
1976	2.1881060653130504
1977	2.2368832428108334
1978	2.4096925207021513
1979	2.533839052853267
1980	2.246879044644828
1981	1.7170634116808259
1982	1.8124264743795635
1983	2.0407643784152896
1984	2.04776498534342
1985	2.0197006027420628
1986	1.9042699689159974
1987	1.8468193683227838
1988	1.7721980924816307
1989	1.873847563776664
1990	1.8268854550718316
1991	1.8742913899434654
1992	2.2385231308454507
1993	2.523645148185409
1994	2.785345006130811
1995	2.6504116931416917
1996	2.1522110832868293
1997	2.0726256303200046
1998	2.2064194798496573
1999	2.2938459899292383
2000	2.2466839675110464
2001	2.129120119147771
2002	2.3555811855588047
2003	2.369227641682585
2004	2.214828329798422
2005	2.189824052835675
2006	2.1797410718090333
2007	2.1371360983161765
2008	2.0816130108276383
2009	2.169615597236259
2010	2.1008196391882876
2011	2.099954597434035
2012	2.1289317513709705
2013	2.099090760318731
2014	2.039932128927859
2015	1.9493789502797796
2016	1.9157738446660346
2017	1.8930881514416456
2018	1.8496549759165077
2019	1.8335486381656523
2020	1.819283641508946
2021	1.7398295626572349
2022	1.6636114192212261
2023	1.64924504317176