Year	annual %
1961	4.995096476578786
1962	5.02518075594681
1963	5.050750092393838
1964	5.109444289755687
1965	5.139168686870167
1966	5.192254128599885
1967	5.237166097138077
1968	5.4813705545637434
1969	5.479618207842978
1970	5.37151968575298
1971	5.194065200874538
1972	5.050848313873042
1973	4.959955385921427
1974	4.938787553120973
1975	4.912218585579923
1976	3.3675010871960938
1977	2.000766762854942
1978	1.9957500324399702
1979	1.998359795167701
1980	2.011288710641751
1981	2.023389911707085
1982	2.0451240884531106
1983	2.063586029767686
1984	2.086843117772589
1985	2.108139032776352
1986	2.130891334510252
1987	2.1674553822483134
1988	2.511485751358017
1989	3.0285768230682297
1990	3.2967799715370267
1991	3.3328322524248124
1992	3.400439289827364
1993	3.4231803042438043
1994	3.3632481594170565
1995	2.969852264586431
1996	2.8337650404798556
1997	3.001941086444581
1998	2.9709812697288034
1999	3.0007752254691473
2000	3.0184251343041155
2001	2.4665824427490173
2002	2.4261844955392924
2003	2.63441583980616
2004	2.3852438558652063
2005	2.5222738521621877
2006	2.336706672942367
2007	2.2550976117556116
2008	2.5079440786386455
2009	2.641880425539964
2010	2.612441135417957
2011	2.1243263364423632
2012	1.5130566436865458
2013	1.3039905535248577
2014	0.6665622185657625
2015	1.2210251246409827
2016	2.5882552202371576
2017	2.757101427937453
2018	2.8757701554757564
2019	3.2001124451715066
2020	3.5535405985163857
2021	3.1743722470053073
2022	3.3114559101304044
2023	4.021820263811317