Year	annual %
1961	2.192454250289984
1962	2.1516020915514673
1963	2.1582065285741407
1964	2.146456004718587
1965	2.10708513560094
1966	2.0558982430627566
1967	2.024118852931281
1968	2.0339064370629387
1969	2.039020532631966
1970	2.0054788080254866
1971	1.8630472800536637
1972	1.8161986926399152
1973	1.9166762260737045
1974	1.9020726120116507
1975	2.059238556830792
1976	1.8336423485086044
1977	1.8700532850894689
1978	1.8791665533516095
1979	1.910123994521797
1980	1.9867286990965454
1981	2.059676259525105
1982	2.154329695136596
1983	2.098924617711859
1984	2.051665234170173
1985	2.0346976735844606
1986	2.014265978205458
1987	1.978099004330062
1988	1.9418272479375958
1989	1.9080730783980187
1990	1.9235454217676988
1991	1.9037309196362315
1992	1.8524551444785544
1993	1.8403422301164625
1994	1.8251442225147656
1995	1.7841339677415249
1996	1.725294586162974
1997	1.6828043911609996
1998	1.657504362394576
1999	1.6230748854520556
2000	1.6066142829514973
2001	1.515208877492995
2002	1.3794454606817652
2003	1.310075296914718
2004	1.270287777501224
2005	1.2000330352360606
2006	1.13042217423407
2007	1.0884519836943838
2008	1.0449652758599797
2009	1.0230622493614163
2010	1.0392718544609352
2011	1.0177926795691121
2012	0.9620876275990327
2013	0.9149121213850435
2014	0.8612604263587258
2015	0.8038294343866852
2016	0.7806866805877917
2017	0.7494157089943343
2018	0.6909493328118401
2019	0.6256385926472774
2020	0.5844066619175976
2021	0.4907945356385568
2022	0.3802414039389532
2023	0.40770696410299934