Year	annual %
1961	3.4661598394075703
1962	3.468380028507477
1963	3.5181187668374303
1964	3.55952039285869
1965	3.6002878436964307
1966	3.63210202552222
1967	3.676899061973224
1968	3.696613086535489
1969	3.720746331024956
1970	3.727846106278575
1971	3.6802838292590163
1972	3.7035727996911656
1973	3.7362584617195016
1974	3.8318780846182112
1975	3.968292664447576
1976	7.050555996696732
1977	9.307708118146948
1978	9.461670282998405
1979	9.510757193026095
1980	9.574765917644921
1981	9.550703521109103
1982	9.538800700429386
1983	9.572536092305404
1984	9.5820239122772
1985	9.514761667105025
1986	6.783364014235921
1987	4.583215281146654
1988	4.524847735600922
1989	4.475091655587957
1990	4.4608623029795975
1991	4.35613270999796
1992	4.293644118059156
1993	4.303733591625362
1994	4.33373907258972
1995	4.37046272736628
1996	4.362779214983245
1997	5.559057858094118
1998	6.670962951507983
1999	6.821605813516891
2000	6.857564848322266
2001	6.867020476335631
2002	6.87438575377423
2003	6.865102856767842
2004	6.873132332223373
2005	6.837877696297431
2006	6.778652299526467
2007	5.931429340611691
2008	5.2561416766791025
2009	5.220812478928267
2010	5.213942985001723
2011	5.229574839148561
2012	5.272806597218803
2013	5.230613935358637
2014	5.187071441942436
2015	5.161046779039062
2016	5.10506038167532
2017	5.007199056702995
2018	4.885763880542749
2019	4.8004043807470165
2020	4.758616299569209
2021	4.697431090757876
2022	4.57853434254904
2023	4.513116801040217