Year	annual %
1961	10.48663481249797
1962	10.489213157432193
1963	10.48853500789896
1964	10.48503751809147
1965	10.461838536793541
1966	10.449491343268859
1967	10.424398417095585
1968	10.373566551974545
1969	10.27514033431297
1970	10.205719335091937
1971	10.101363049907675
1972	10.002077534684425
1973	9.874857027903857
1974	9.77681468826491
1975	9.66275930617567
1976	9.556872511854543
1977	8.906881625948557
1978	8.30977900409159
1979	8.221900811000179
1980	8.142582704610597
1981	8.066383537682718
1982	7.987870995605846
1983	7.876989469269283
1984	7.765375349372597
1985	7.62883038425349
1986	7.500141191569969
1987	7.369917259945451
1988	6.164177170313116
1989	2.237089547212363
1990	2.259660834176288
1991	2.6446374923988074
1992	3.5387498071030983
1993	3.7694601437467266
1994	3.116590450459837
1995	2.4552441737447044
1996	1.6977404616467708
1997	1.9384347312350159
1998	2.3131424562710285
1999	2.3903410990759917
2000	2.476859784147609
2001	3.818032275675636
2002	4.3576438015365895
2003	4.342626575525377
2004	4.32242617730309
2005	4.324784098409368
2006	4.344938572131997
2007	4.371996943710635
2008	4.525276166914495
2009	4.708910778449878
2010	4.8281523623455085
2011	4.9424322518521775
2012	5.01652946123931
2013	4.750681237564888
2014	4.445150342146839
2015	4.39536435239694
2016	4.33688802912309
2017	4.2788083381917135
2018	4.218804132077076
2019	4.158421052017846
2020	4.077189083801488
2021	4.0001663468287605
2022	3.9891602909104713
2023	3.997152882064573