Year	annual %
1961	2.97026938454193
1962	3.02968927533045
1963	3.04931689621707
1964	3.14910223263789
1965	3.20206449418141
1966	3.05914831424818
1967	3.00976664570999
1968	3.0384792623554
1969	3.02957984670179
1970	3.04505280068195
1971	3.16656551369303
1972	3.27379854127154
1973	3.36259922979227
1974	3.78771106636506
1975	4.13375977795885
1976	4.1253366659246
1977	4.18538999131019
1978	4.26172980866171
1979	4.26696918582142
1980	4.2923865207415
1981	4.28935799737969
1982	4.0773141132874
1983	3.28472761808475
1984	2.27895833492794
1985	1.81665518839006
1986	1.87930569589589
1987	1.71039683271081
1988	1.09766648080682
1989	1.28674952805151
1990	1.78038955394371
1991	1.70566333632953
1992	1.50971890053507
1993	1.74407304866166
1994	2.40893107478887
1995	2.55250639227257
1996	2.42481159995041
1997	2.45109662763757
1998	2.3231892056128
1999	2.38850091216307
2000	2.55963690837227
2001	2.43590785577774
2002	2.28583965848042
2003	2.21912557576201
2004	2.25392586427754
2005	2.42945361033328
2006	2.64703640708656
2007	2.78996436965565
2008	2.76377910390166
2009	2.71626568948597
2010	2.37468258916878
2011	1.9944775499975
2012	2.12762901437903
2013	2.3357525902736
2014	2.77449286124806
2015	3.10751167131043
2016	3.11054531285464
2017	3.25461617065729
2018	3.19148702209797
2019	2.89358996893094
2020	2.75677878454575
2021	2.70104593999388
2022	2.63061426078782
2023	2.6001891699622