Year	annual %
1961	2.96277856647304
1962	2.95268460253087
1963	2.927161985058
1964	2.92316532163094
1965	2.92202776542478
1966	2.89786246170878
1967	2.87416385545982
1968	2.8560660720418
1969	2.84388179977747
1970	2.6041998100498
1971	2.54503571421173
1972	2.69810393632063
1973	2.64001986001968
1974	2.5723906934301
1975	2.52038740807264
1976	2.46470311736746
1977	2.48238831966364
1978	2.51886748413374
1979	2.4970683288076
1980	2.50780755368984
1981	2.48391657997361
1982	2.43508579524966
1983	2.4330149256554
1984	2.40740717354434
1985	2.3620742408617
1986	2.31183594285629
1987	2.26489768953194
1988	2.25975036452914
1989	2.24715200247878
1990	2.21710522088361
1991	2.12084332741883
1992	2.03486931683517
1993	2.00446004559178
1994	1.97650334441666
1995	1.92355612770439
1996	1.85695289229942
1997	1.82243949325095
1998	1.7695187906283
1999	1.6670604009319
2000	1.52044227070086
2001	1.34331954460691
2002	1.17608515721159
2003	1.05113533724533
2004	0.974731754515074
2005	0.904184155760706
2006	0.827239266792745
2007	0.769759369616088
2008	0.716987182658426
2009	0.702724346623641
2010	0.756357202975091
2011	0.845382115888711
2012	0.918055908591097
2013	0.967486220265649
2014	1.04365112789631
2015	1.17223066396866
2016	1.36122543775229
2017	1.50694618507609
2018	1.87582164020533
2019	1.90972560807882
2020	1.45140240084226
2021	1.22566025209601
2022	0.986112053718798
2023	0.886323861618286