Year	annual %
1961	-0.030442160724741107
1962	-0.27994300326477245
1963	-0.4848576224394626
1964	-0.5220908663891594
1965	-0.5726797417505707
1966	-0.6198592959849445
1967	-0.6850236334009702
1968	-0.8048303423665788
1969	-1.0476165149725432
1970	-0.9752668598797731
1971	-1.0889245409156927
1972	-1.4851907762322392
1973	-1.6654204448571444
1974	-1.7843166989230121
1975	-1.9022674220198328
1976	-2.0000100602295916
1977	-2.0762035332851863
1978	-2.2056301466071018
1979	-1.9973364330112848
1980	-1.5801261702970268
1981	-1.4727502309758354
1982	-1.3783594235484877
1983	-1.2970927959692937
1984	-1.3063319234867588
1985	-1.2936809700380332
1986	-1.2181282857814622
1987	-1.1669315234828042
1988	-1.1724313507406705
1989	-0.316655925222937
1990	0.5501756124087941
1991	0.3550792332234024
1992	0.07287500514676362
1993	-0.2898198309055533
1994	-0.5132338874547042
1995	-0.5861026284115327
1996	-0.5771041784686755
1997	-0.5580467858817512
1998	-0.5418192386371099
1999	-0.5272901408232528
2000	-0.5214293766993277
2001	-0.621312533281434
2002	-0.528050862094565
2003	-0.5383361492965955
2004	-0.849725231946659
2005	-1.595505066225249
2006	-1.809315050899853
2007	-1.4014548937620703
2008	-1.2423940542763192
2009	-1.09226239749632
2010	-1.8409970733441428
2011	-2.2102777775574105
2012	-1.7117818830880052
2013	-1.3808655710721423
2014	-1.2300222312909546
2015	-1.3123390425153492
2016	-1.686518169131598
2017	-1.8591249163733354
2018	-1.4571605741724003
2019	-0.8107993689795897
2020	-0.5691003734919805
2021	-0.4246033583427338
2022	0.4110537918241384
2023	0.6829141852919168