Year	annual %
1961	3.2407851803073844
1962	2.4059698687664897
1963	2.3862523372042674
1964	2.755942004969329
1965	2.4198240726642632
1966	2.288389558645601
1967	2.004984479783104
1968	1.785377440772694
1969	1.6947443336171482
1970	2.215086962733324
1971	3.025293352218882
1972	2.930622273291974
1973	2.770069755886062
1974	2.441956390242453
1975	2.067253543112103
1976	1.9860762845305402
1977	2.0118537847495053
1978	2.0653967954564
1979	1.8896512348194232
1980	1.6899460366466346
1981	1.7933910090457565
1982	1.8107286598972347
1983	1.8234840584106822
1984	1.9594553071217768
1985	1.9182664300407584
1986	1.8615874264409704
1987	1.9077756694475725
1988	1.8017927206871824
1989	1.3827422529019
1990	0.812999167273817
1991	0.7557589114521318
1992	0.9317587734618403
1993	0.93442306925128
1994	0.7617940411342103
1995	0.5655359510913573
1996	0.4162113025029549
1997	0.36941268790815884
1998	0.3464171348073437
1999	0.6960832536647272
2000	1.213443781203093
2001	1.1651563833676375
2002	1.1331184303204749
2003	1.1450241349034247
2004	1.2613007564132714
2005	1.4047555138109855
2006	1.479626007046891
2007	1.5153301384680151
2008	2.4780110813893583
2009	2.452869587064451
2010	1.5950566820314456
2011	1.7345945847781152
2012	1.786347911756574
2013	1.778515183991499
2014	1.7584980527391436
2015	1.726309145346381
2016	1.6774015137060994
2017	1.5647733798107644
2018	1.4734001523808629
2019	1.4750647903346732
2020	1.3354432110178716
2021	1.1109802525473558
2022	0.7310668641674289
2023	0.42104789105888457