Year	annual %
1961	1.9873452287081124
1962	1.9585356112686219
1963	1.9276847913999802
1964	1.9106459897521324
1965	1.920887681606686
1966	1.9409921850306642
1967	1.9506607602984565
1968	1.9350456012386268
1969	1.9076433923278002
1970	1.8781144040411077
1971	1.9184069162102615
1972	1.8924971754279676
1973	1.8647010310478935
1974	1.769771751632887
1975	1.607654828788751
1976	1.5766007216032398
1977	1.8949026099918684
1978	1.790156592206006
1979	1.8464759070158439
1980	1.9277038653630598
1981	2.0132780109072703
1982	2.081153295874616
1983	2.1225305662245377
1984	2.146095666271466
1985	2.21034049043544
1986	2.2967350175413452
1987	2.33678385493205
1988	2.351183423724236
1989	2.6531128068138896
1990	2.65262079189398
1991	2.6227911396287507
1992	2.567240233448688
1993	2.514179093216738
1994	2.418018952064126
1995	2.2953526389876853
1996	2.174841778319302
1997	2.0901229174522897
1998	2.0552165345522058
1999	2.0776347885127695
2000	2.1141649245294483
2001	2.1385103704021176
2002	2.174503884074243
2003	1.9688082229434376
2004	1.8076108828558666
2005	1.8437028452032194
2006	1.8964207671385604
2007	1.920132526459416
2008	1.9180053798128598
2009	1.951989170158936
2010	1.977101528079752
2011	1.9812198349871266
2012	1.980634897498163
2013	1.9580339643927829
2014	1.9577201527973709
2015	1.9408325059301907
2016	1.9105580137990292
2017	1.8877956203362338
2018	1.86234980221004
2019	1.8208259853165167
2020	1.7843938200375011
2021	1.7197199608287015
2022	1.6221490853538505
2023	1.5739715460158394