Year	annual %
1961	8.068415661544371
1962	8.062574986488736
1963	8.014709725555091
1964	7.961025386213
1965	7.91502162966827
1966	7.885312021880919
1967	4.103470552277406
1968	4.352131356209261
1969	4.444771524955335
1970	4.502746141980711
1971	4.573330547957685
1972	4.64922939934373
1973	4.718839707453938
1974	4.799475738100074
1975	4.820355481342009
1976	4.885661421963416
1977	4.966279283749806
1978	5.012784061862078
1979	5.0232000205084715
1980	4.9168084196605255
1981	4.751423636224628
1982	4.515539172749986
1983	4.447463958401202
1984	4.48798640319475
1985	4.528543222454093
1986	4.560265545728191
1987	4.579075580127154
1988	4.579216589548346
1989	4.57037191637419
1990	4.489676369446421
1991	4.322246027039533
1992	2.636782405407131
1993	2.0957654867140163
1994	2.0140060908126602
1995	1.9895832232719604
1996	1.9973185475083317
1997	1.994707398454845
1998	1.9804691494821673
1999	1.8555912248673652
2000	1.7839745625327166
2001	1.8686849786082098
2002	1.8855399558898311
2003	1.802329819095302
2004	1.7574707460828756
2005	1.864005656665974
2006	1.9575914470918794
2007	2.0183594620330862
2008	2.0855855302245097
2009	2.1729450375004498
2010	2.2706955211583963
2011	2.3576878700142174
2012	2.433842089417768
2013	2.4997005637993004
2014	2.5592986695476276
2015	2.624426023473925
2016	2.6917839470737284
2017	2.6216782894071766
2018	2.532020265020584
2019	2.557093459113188
2020	2.6390999805823108
2021	2.6892656968425186
2022	2.6708697483323487
2023	2.7054336273559505