Year	annual %
1961	2.2112341138988323
1962	1.5776785296629376
1963	1.4226002772212727
1964	1.2458268553687246
1965	1.0650023476069952
1966	0.8897497677815351
1967	0.4197886746917
1968	-0.05109949182031391
1969	-0.20807402660000157
1970	-0.3488972241144535
1971	-0.46021305940006685
1972	0.09633912113135296
1973	0.8935814461840004
1974	1.142094935620559
1975	1.1691729638767672
1976	0.8159790531153235
1977	0.4745749275468247
1978	0.47233334771689395
1979	0.46359861027180344
1980	0.4517321342573124
1981	0.5851845799934321
1982	0.8314521182047288
1983	0.9228386892789988
1984	0.7981996222468215
1985	0.5046478965675766
1986	0.1468406106230868
1987	-0.12808299028483455
1988	-0.1532902960847858
1989	0.4404674194070716
1990	1.7427211537193856
1991	3.254671651614966
1992	3.984660348558126
1993	3.859368240823179
1994	4.008703510190507
1995	3.8871185897994875
1996	3.8245911691872316
1997	3.817549567824273
1998	3.7901987970527102
1999	3.710577035619723
2000	3.3127594355713836
2001	2.4756314122003995
2002	1.87480682870633
2003	1.6738549607482975
2004	1.5721397716117427
2005	1.6669149939555552
2006	1.839591515722467
2007	1.8803829209780958
2008	1.8910667251137638
2009	1.8755663395579887
2010	1.769301371847209
2011	1.1485378147553529
2012	0.7807490346179282
2013	0.6911918022422817
2014	0.6017458535563501
2015	0.5206232178683715
2016	0.4424227721057288
2017	0.35855544076947715
2018	0.28725573805086135
2019	0.2132374573134668
2020	-0.13322011595432612
2021	-0.34720518295989483
2022	-0.41723629318532335
2023	-0.5202075721776693