Year	annual %
1961	1.44405447797965
1962	1.46594793016486
1963	1.49499396744886
1964	1.53733401223221
1965	1.59897251138691
1966	1.6319992210558
1967	1.66111063957758
1968	1.7020457510888
1969	1.71203938527415
1970	1.72405528356284
1971	1.698478892082
1972	1.69359309725953
1973	1.74953290768293
1974	1.85147135292026
1975	1.9792882203038
1976	2.11675840313508
1977	2.31446772919871
1978	2.48135991939087
1979	2.58363174420329
1980	2.67543922982349
1981	2.71436045482398
1982	2.74270565614036
1983	2.81937459526064
1984	2.8831009677501
1985	2.89529990756932
1986	2.82519352879938
1987	2.73010305749971
1988	2.67549497570305
1989	2.63714361455066
1990	2.61991248147088
1991	2.52714173284372
1992	2.46263964821394
1993	2.4850766675275
1994	2.52059733150845
1995	2.56324294246536
1996	2.55512095673786
1997	2.56669704135617
1998	2.74887688045847
1999	2.92518416489156
2000	2.98388558736392
2001	3.04072894648829
2002	3.07479003510637
2003	3.10451751268277
2004	3.13802065225682
2005	3.14899280596388
2006	3.12248153649463
2007	3.03278641140169
2008	2.94356863526933
2009	2.9314075345183
2010	2.93926755839508
2011	2.96973830872596
2012	3.03188007722477
2013	3.00842195462805
2014	2.97977849923872
2015	2.97234560821631
2016	2.93481128912484
2017	2.86565542084027
2018	2.76868116258088
2019	2.70387556725288
2020	2.68878766730686
2021	2.65037591522147
2022	2.55998839127434
2023	2.51606040251666