Year	annual %
1961	2.411639584320963
1962	2.3685660249822154
1963	2.3589916313278816
1964	2.334079342769186
1965	2.2984312101256403
1966	2.168582455093576
1967	2.1547153564633716
1968	2.026763530260635
1969	1.8230717102017555
1970	1.696305531078441
1971	1.5910422791663734
1972	1.509959276759685
1973	1.4487449857199222
1974	1.4908115432046276
1975	1.5481735567986705
1976	1.4941466195081459
1977	0.7998303314031772
1978	0.12460243603138982
1979	0.01572821645267873
1980	-0.06817347791437932
1981	-0.1351732851477495
1982	-0.19323423497124295
1983	-0.23316635844457587
1984	-0.24693163829119358
1985	-0.2554956082430779
1986	-0.2707690694800973
1987	0.1779407156891864
1988	0.5187323889491992
1989	0.4083251194909167
1990	0.31105040598721706
1991	0.24474690087204135
1992	0.2102391100781737
1993	0.19287414429136732
1994	0.1977004962128468
1995	0.20509099985988422
1996	0.17490336192041717
1997	0.4223912036567189
1998	0.6424280093015918
1999	0.5899571452152774
2000	0.571306795951727
2001	0.5516959347658522
2002	0.5373994325254549
2003	0.5444908862628497
2004	0.5601211884509812
2005	0.5311342912719795
2006	0.4878807797161413
2007	0.36466021809388705
2008	0.20499561801579697
2009	0.12790918974493373
2010	0.15205983137860432
2011	0.14211880850137887
2012	-0.09107855851136708
2013	-0.3163827947275063
2014	-0.36263554614887467
2015	-0.40447675475731276
2016	-0.32229918047208134
2017	-0.20844775695831805
2018	-0.2014597236781116
2019	-0.15848648753466013
2020	0.29819189262349477
2021	0.7164694820282461
2022	0.7625136230434407
2023	0.8074728645308494