Year	annual %
1961	8.840094798574393
1962	8.58072892467804
1963	6.165862334121346
1964	3.8609536546160963
1965	3.950090139638022
1966	4.012401667967089
1967	3.989888033065473
1968	3.886435154277798
1969	3.9322814992661668
1970	4.105833315129036
1971	4.167423685214361
1972	4.242268730504916
1973	4.318685466514085
1974	4.387236095166622
1975	4.40360866281224
1976	4.357926423881895
1977	4.252352473294281
1978	4.154154245718926
1979	3.8328339459137877
1980	3.5532345126108678
1981	3.543680719335393
1982	3.536137856197938
1983	3.5432627528769784
1984	3.574989208429956
1985	3.611085011894054
1986	3.642392004923827
1987	3.6348252165011994
1988	3.588095861963572
1989	2.7318433799234363
1990	1.8177898383411044
1991	1.6914219030266302
1992	1.562671525150094
1993	1.419941057365338
1994	1.285714250540922
1995	1.1636886748669502
1996	1.0599746522664832
1997	0.9630186191116812
1998	0.8972814349782946
1999	0.8845749659211409
2000	1.8185260752235362
2001	2.7664554261652214
2002	2.727809980770903
2003	2.666363996554834
2004	2.599035398169708
2005	2.5320677688366158
2006	2.5074684385133104
2007	2.547470192899255
2008	2.6410219080334545
2009	2.7504662172359815
2010	2.8053406935578855
2011	2.1053238059840518
2012	1.8474170502122351
2013	1.971813897292407
2014	2.103539794828502
2015	2.2091120050168627
2016	2.260489418466996
2017	2.267089384613537
2018	2.2912481262521553
2019	2.2830363835852756
2020	2.0632366887695173
2021	1.7956195192037259
2022	1.7102559126151033
2023	1.6558876269904408