Year	annual %
1961	0.7059032091546479
1962	0.6369754040225568
1963	0.6310945616339112
1964	0.8538219465229131
1965	1.3691913295292786
1966	1.9612679082239928
1967	2.391449739229325
1968	2.4669596486171397
1969	2.1956072394278103
1970	2.0718064275567287
1971	2.7184394903167735
1972	2.3440267300324327
1973	2.127994382147228
1974	2.0258872821133767
1975	1.959347908227248
1976	1.9175354198461538
1977	1.896386870316718
1978	1.9029444321387003
1979	2.0262389685086695
1980	2.2757318456249913
1981	2.5702015509801814
1982	2.7812557955936326
1983	2.8393610213107863
1984	2.7937366370873082
1985	2.641106583713433
1986	2.492924391099693
1987	2.4710127551731635
1988	2.454101006212691
1989	2.4063022302220514
1990	2.363234360899031
1991	2.321240163587776
1992	2.2724090416422786
1993	-1.2811342645467227
1994	-0.26248350925897657
1995	3.848183881965405
1996	3.1844049987009813
1997	2.609061601513149
1998	2.267840968831823
1999	2.25536189411435
2000	2.1732399107332734
2001	2.0349908972195614
2002	1.9288626159125954
2003	1.915009343095055
2004	1.9248682921734002
2005	1.8875162877879215
2006	2.089327901320374
2007	2.179102468491525
2008	2.1117733953611024
2009	2.0458780733334203
2010	1.9137981044121473
2011	1.8529215966142303
2012	1.7699136616813407
2013	1.718212389306052
2014	1.6773349240212867
2015	1.6385173273723765
2016	1.6007808947345072
2017	1.5646083485418474
2018	1.5169736017746753
2019	1.4706550393150664
2020	1.4308083288329136
2021	1.3870192419505378
2022	1.3319781551336702
2023	1.2715797023782605