Year	annual %
1961	2.84659065946803
1962	2.88173808884545
1963	2.90020315645222
1964	2.91573959589449
1965	2.92908231751735
1966	2.92476053285096
1967	2.91722284104371
1968	2.91235165041049
1969	2.89927012016043
1970	2.87922547128411
1971	2.85456946411862
1972	2.83592214277982
1973	2.81913902805976
1974	2.7978067683364
1975	2.77772390852479
1976	2.75605424384648
1977	2.73213683901066
1978	2.70793620558164
1979	2.6834895720005
1980	2.65740570796969
1981	2.6293499652804
1982	2.59987799633425
1983	2.57107471570445
1984	2.5491911416887
1985	2.53149513848437
1986	2.5159231473228
1987	2.49010341073397
1988	2.44095573667987
1989	2.38264315468184
1990	2.32006286999306
1991	2.23742019192721
1992	2.11061272814707
1993	1.98316014835116
1994	1.91125393924022
1995	1.8685590602886
1996	1.83009674212617
1997	1.78952275457463
1998	1.75181516385725
1999	1.72566651819784
2000	1.71308817043169
2001	1.71968558942167
2002	1.73709315382378
2003	1.7486932014909
2004	1.73957986039204
2005	1.72443317741318
2006	1.72111503482542
2007	1.7181335805958
2008	1.70420581194769
2009	1.68247933289289
2010	1.66031048053538
2011	1.64188311720888
2012	1.60252187198822
2013	1.5324232376039
2014	1.48359860231919
2015	1.47983523757956
2016	1.49338987255655
2017	1.55335626648726
2018	1.89090930713133
2019	1.90968326333656
2020	1.40190462603926
2021	1.18206337539033
2022	1.13559975243065
2023	1.04712882938642