Year	annual %
1961	1.77712462109052
1962	1.53703684221733
1963	1.61021945224957
1964	1.73636319617259
1965	1.64624302502042
1966	1.8575152756726
1967	2.22447741197887
1968	2.25292406885326
1969	2.24910987984231
1970	2.23485514176548
1971	2.25304380675294
1972	2.30817098718581
1973	2.37278240368425
1974	2.45257536458332
1975	3.69939562776839
1976	4.81594373956117
1977	3.76843461238997
1978	2.86760142486727
1979	2.98537020862928
1980	3.10213696205313
1981	3.21354609915972
1982	3.2974527326651
1983	3.35320501916948
1984	3.38194161321637
1985	3.39768753510501
1986	3.33093272372226
1987	3.02828554053134
1988	2.74710605415951
1989	2.63176506303593
1990	2.4940676377263
1991	2.3846528039865
1992	2.32375186283265
1993	2.24036926865414
1994	2.10774651269655
1995	1.91804419938335
1996	1.76331956063309
1997	1.68115971162844
1998	1.51057323725397
1999	1.39842912410864
2000	1.40229085828763
2001	1.37593080261361
2002	1.34886695233422
2003	1.35423891111813
2004	1.40727321515229
2005	1.36408196251206
2006	1.44113729642515
2007	1.62790867702938
2008	1.70897167476718
2009	1.79590393152832
2010	1.85870199052442
2011	1.89839428094337
2012	1.94310213435967
2013	1.9667158178046
2014	1.97904881035906
2015	1.99994605069585
2016	1.99343168879913
2017	1.95700247075081
2018	1.9033254281097
2019	1.83944488568624
2020	1.73245672803153
2021	1.65770320084269
2022	1.62833925417918
2023	1.55401932380535