Year	annual %
1961	3.8535456498440688
1962	3.777103949586836
1963	3.719280718738216
1964	3.6750551011958463
1965	3.520279649274046
1966	3.3805253301374605
1967	3.2311840369950744
1968	3.13972281303041
1969	3.05905611861809
1970	2.9650307943255605
1971	4.014446074722182
1972	5.41632151527733
1973	5.682646362943162
1974	5.590030634114203
1975	5.491096437373111
1976	5.3747179655616355
1977	5.238694424227644
1978	5.084108473426468
1979	4.919729993467653
1980	4.738339367549877
1981	4.2603122185806725
1982	3.7843094096584524
1983	3.7007202122130147
1984	3.746022218648135
1985	3.787616867616251
1986	3.8089329751352365
1987	3.799965287516769
1988	3.756605712505407
1989	3.6810450817919995
1990	3.571393635303121
1991	3.6334204442555915
1992	3.5750022038678155
1993	3.4157160250384413
1994	3.3385550483392334
1995	3.2589323629160907
1996	3.179317043185344
1997	3.0912256412203893
1998	2.991460766474994
1999	2.8764501651441265
2000	2.747200930007523
2001	2.606822301044209
2002	2.4483921740273096
2003	3.933318651294472
2004	6.869993356666046
2005	7.921316366102362
2006	7.411854087923304
2007	6.958759725551629
2008	6.541168420655656
2009	6.093509175487552
2010	2.9197763698050587
2011	-0.06044392057758081
2012	1.131013216219744
2013	3.036979689510294
2014	3.9354296159731303
2015	3.911034988562794
2016	3.5312563113920676
2017	3.3993330006712066
2018	2.1855303339957084
2019	0.5791176275509254
2020	-1.0000320348608875
2021	-0.8365053352847374
2022	0.7459486780431803
2023	1.0380187155367517