Year	annual %
1961	-0.08257920226985505
1962	1.3124242749240125
1963	2.5634771742666373
1964	2.4559782171727136
1965	2.4636240096952378
1966	2.748087827710606
1967	2.597921323853811
1968	2.6308530903737903
1969	2.7290844409326525
1970	2.7365749006095825
1971	2.7205503733788845
1972	2.4969541517337035
1973	2.3543982663947247
1974	2.173088491228498
1975	1.9208557448595798
1976	1.740974688515422
1977	1.6186606284030773
1978	1.6172473791464341
1979	1.6086289368050615
1980	1.5489104431971583
1981	1.574993373470022
1982	1.7157400326906327
1983	1.693000483920386
1984	1.587984264836635
1985	1.6077908042998672
1986	1.6831518702931731
1987	1.7544745520011276
1988	1.7469332469331817
1989	1.6803745609554426
1990	1.6257197454315246
1991	1.540749087388022
1992	1.4347646276179375
1993	1.3736787775944208
1994	1.3417489397308486
1995	1.293202110179493
1996	1.2576721809817997
1997	1.2329176869900067
1998	1.1731187223214619
1999	1.084103630584579
2000	1.0040612476484938
2001	0.9449918434555116
2002	0.8972248166449788
2003	0.8552793547875552
2004	0.8224542680963083
2005	0.8115012191462085
2006	0.7902296678175276
2007	0.7663071814943123
2008	0.7544379103599113
2009	0.738998225733738
2010	0.7272780188692423
2011	0.7705566163042477
2012	0.8620874383519208
2013	0.8444959638010232
2014	0.8064088989269322
2015	0.7645685676932317
2016	0.7549384458375386
2017	0.7657560351456993
2018	0.6560208570661814
2019	0.5679343992643737
2020	0.47460772203737633
2021	0.3418037577845183
2022	0.2567781161346687
2023	0.2123995424337295