Year	annual %
1961	3.893009665334537
1962	3.2892070218314924
1963	3.182264530592515
1964	3.112068143971954
1965	2.984828013439993
1966	2.8649454435328137
1967	2.859929436949769
1968	3.071745751082088
1969	3.2198483846197985
1970	3.1576191342669966
1971	3.0291872988348563
1972	3.100658737031235
1973	2.964573466259434
1974	2.8987113497515464
1975	2.90212612132669
1976	2.8056887612500465
1977	2.8100249977718454
1978	2.669114361790378
1979	2.5822759936994446
1980	2.827020349742633
1981	2.77592616479635
1982	2.883273306828148
1983	2.890837192720956
1984	2.867971958400946
1985	2.8170464929185184
1986	2.6913910585643857
1987	2.75514115529854
1988	2.63915255793554
1989	3.437377879082472
1990	2.5430425447496394
1991	0.14106058177309305
1992	0.8784304298020181
1993	0.8555349601405285
1994	0.8437256696397712
1995	0.8241712600000908
1996	0.812476342196282
1997	0.7882372949943721
1998	0.774515178812666
1999	0.755983737416337
2000	0.7424786292851772
2001	0.7104426175981506
2002	2.181208904411263
2003	2.0602741818145716
2004	1.9717989374206792
2005	1.8264293566510672
2006	1.6622278972406233
2007	1.4922150695281766
2008	1.435124210729184
2009	1.473287913174129
2010	1.6093732644722363
2011	1.7877837846788869
2012	1.8483789364344707
2013	1.7436393704330793
2014	1.6461159963627605
2015	1.4847643325691184
2016	1.5440144803237132
2017	1.5412849639116906
2018	1.3171621044569775
2019	1.0714135492436767
2020	0.8576109230008797
2021	0.44340448003380806
2022	0.09371606301637488
2023	0.1038882612292593