Year	annual %
1961	0.9433640746858898
1962	0.8335666581916833
1963	0.8199051988564857
1964	0.7998046506017774
1965	0.8001220116710681
1966	0.8122788343604241
1967	0.8240900738015446
1968	0.8186546481792292
1969	0.8648758547309038
1970	1.1191348417111346
1971	1.2919094494461951
1972	1.2468506067272127
1973	1.2032561045196986
1974	1.1452557291476668
1975	1.2390596047700309
1976	1.3552828053836128
1977	1.3605012650170012
1978	1.367566454136711
1979	1.3786384176894477
1980	1.4315426451556603
1981	1.483039195167454
1982	1.4504986135572493
1983	1.3836793777961753
1984	1.3013335233587442
1985	1.227151188850776
1986	1.1472043517321449
1987	1.0555028336993435
1988	0.9645199305594803
1989	0.8840738827810234
1990	0.8972164735590751
1991	1.0566927582766774
1992	1.7686281629952858
1993	1.7597448429063103
1994	1.59943090574076
1995	1.4609775537327268
1996	1.3390707746822017
1997	1.2378967722236762
1998	1.173070631792594
1999	1.162978227604528
2000	1.0559023013103581
2001	1.0998323870837439
2002	2.312629320168614
2003	2.267734821632348
2004	2.166096955941624
2005	2.068299772833378
2006	1.9662811428978417
2007	1.8829870825089505
2008	1.8296186790094446
2009	1.8003916227254475
2010	1.6717511181599378
2011	0.7055547692399122
2012	0.5675396226519182
2013	0.4783734563618124
2014	0.44802910815758556
2015	0.42646675490784164
2016	0.396122981186491
2017	0.3578094784336676
2018	0.3275047846679762
2019	0.2968037132633601
2020	0.25812327837810695
2021	0.10855675560740755
2022	-0.02128981976937239
2023	0.06797419988664638