Year	annual %
1961	1.3891172755318308
1962	1.433442435045265
1963	1.4332540937961085
1964	1.415760113608826
1965	1.3656632990541198
1966	1.4517976077020052
1967	1.618463862571602
1968	1.5588266598303164
1969	1.5458038644992342
1970	1.5274578061542599
1971	1.530816686927011
1972	1.4863436547236404
1973	1.5049222607411252
1974	1.5514620394084204
1975	1.73641670982623
1976	1.9853170298412124
1977	1.9899865046230332
1978	1.7533065361345734
1979	1.8300845236247198
1980	1.9845400199590273
1981	2.2872940823570644
1982	2.2671125193400172
1983	2.015585305606578
1984	2.039479794670413
1985	2.0108928015314405
1986	1.9515599283946585
1987	2.042189336233477
1988	2.066956763728612
1989	2.048090290627627
1990	2.6961925398096156
1991	2.0498888737817964
1992	1.6192059892980808
1993	1.2971510631780063
1994	1.230809181796559
1995	1.3999848919464313
1996	1.3476300250681845
1997	1.3085046776322002
1998	1.2352108789443434
1999	1.1952883199306115
2000	1.1875312404580995
2001	1.1664059445982105
2002	1.04927112454601
2003	1.0287670696601339
2004	1.1305157205246985
2005	1.1014696004431244
2006	1.1502127251769423
2007	1.2669151511498455
2008	1.2703777364391868
2009	1.2272937703586848
2010	1.209457644643635
2011	1.332404059232715
2012	1.2790816984410185
2013	1.1462791016451916
2014	1.0482429839114218
2015	0.914304455832891
2016	0.9394060849426324
2017	0.8834787750229509
2018	0.8981533945417937
2019	0.8985271372196024
2020	0.7076935629159067
2021	0.5679874852251459
2022	0.6200313233013901
2023	0.6774254572028013