Year	annual %
1961	-1.5981850785970075
1962	-2.3979678694855613
1963	-2.753931501909908
1964	-3.038845660940593
1965	-3.3035544443156004
1966	-3.5632652028143545
1967	-3.820587114710573
1968	-4.093924580111017
1969	-4.519624334408482
1970	-3.4319045693632297
1971	-1.1273846867990742
1972	-0.6440804752304478
1973	-0.66555412324945
1974	-0.6909149956678268
1975	-0.6571382310958257
1976	-0.6120745153395233
1977	-0.5909952616991818
1978	-0.5945087907703771
1979	-0.7094769619437985
1980	-0.6348998636765034
1981	-0.13398759903459492
1982	-0.17408970014104558
1983	-0.25442531806953367
1984	-0.32077012267697314
1985	-0.3621005766952293
1986	-0.41123612205162297
1987	-0.45358241312937936
1988	-0.5187886830152953
1989	-0.6074288739634387
1990	-0.6788586783442346
1991	-0.02258270926832071
1992	1.1675905414560799
1993	1.6164502973970356
1994	1.6159546945701295
1995	1.5831653812249955
1996	1.56198208393375
1997	1.5723267641955287
1998	1.5851974202945576
1999	1.6137228484819848
2000	1.6895861272467265
2001	1.4133936855563083
2002	0.8161474516516791
2003	0.5711839643175555
2004	0.5299664911843458
2005	0.5208756153516492
2006	0.5275731367497715
2007	0.5092249245670816
2008	0.5035445179097248
2009	0.47942437291886947
2010	0.45256607884360656
2011	0.5788772501276578
2012	0.4813707007126704
2013	0.2246577950874537
2014	0.1605939289167811
2015	0.08776310578903761
2016	0.04838807328429189
2017	0.01813949274858309
2018	-0.05442835246701139
2019	-0.1362006294177507
2020	-0.2092019257640528
2021	-0.16706919030103573
2022	-0.015201958041468493
2023	0.0516772312505227