Year	annual %
1961	0.038189877446468255
1962	0.007520529603089691
1963	-0.16056076195707245
1964	-0.40786622811474676
1965	-0.6923802888245483
1966	-0.8375100672766009
1967	-1.0584905956488393
1968	-1.1857450802524243
1969	-1.2541016873765563
1970	-1.5956415907030657
1971	-1.4876677474460371
1972	-1.4016219292102803
1973	-1.5518649728091292
1974	-1.7483409766246756
1975	-2.057189443849976
1976	8.80777706806317
1977	7.439536651380883
1978	-12.79505774457172
1979	-13.86642185073029
1980	-2.609190681197853
1981	-2.6518520519885618
1982	-3.449289475639055
1983	-3.7401037524096674
1984	-3.2095492799392806
1985	-3.0865073293850087
1986	-2.6580535333275024
1987	-2.7346133777612054
1988	-3.3429098528770367
1989	-0.12613587672119897
1990	-0.17689091730417789
1991	-0.09549295454992697
1992	0.007260007263202031
1993	-0.17669979017374735
1994	-0.33111955181943287
1995	-0.3220705641370409
1996	-0.2773889911805233
1997	-0.3558160565267968
1998	-0.4426478802856201
1999	0.8788442969817345
2000	0.8300318242890687
2001	0.7278904876008347
2002	0.4179604338613806
2003	0.3791053163409793
2004	0.5985130568208646
2005	0.4911269766629893
2006	0.6264620361249709
2007	0.8280073158394848
2008	0.5265386392738283
2009	0.1659665008805955
2010	-0.2558484677485638
2011	-0.21025045575181006
2012	1.3857383362485038
2013	7.973100199327086
2014	8.677699300195918
2015	0.6384896234225482
2016	-3.5716840365342173
2017	-3.814273351635062
2018	-4.054783096783929
2019	-4.33687716515322
2020	-3.57593980137421
2021	-2.7776756951573476
2022	-3.4184921306572447
2023	-4.100840245579261