Year	annual %
1961	4.067138340662161
1962	3.822989327726468
1963	3.618002880734787
1964	3.5880937694634145
1965	3.5236263024071075
1966	3.4819506071722834
1967	3.4177201437781837
1968	3.302095672978779
1969	3.0510147309271103
1970	3.126380657519686
1971	3.567330502291259
1972	3.51464521073018
1973	3.316148189684376
1974	3.209307659953623
1975	3.085250119415551
1976	2.9996082350439583
1977	2.9049141590187326
1978	2.7870102239818793
1979	2.243439365704231
1980	1.7627969598704076
1981	1.857045468666981
1982	1.9610612576655861
1983	2.036494893825105
1984	2.035788394047906
1985	2.036561053654638
1986	2.1191893875221157
1987	2.170046712642158
1988	2.169916159429434
1989	1.3324991182387698
1990	0.2807334889373832
1991	0.08127590816853855
1992	-0.19598248314219366
1993	-0.5631058775864859
1994	-0.7815402444217778
1995	-0.8588878517675012
1996	-0.8495586283465435
1997	-0.825599753906236
1998	-0.8138296939141084
1999	-0.7989209296761143
2000	-0.7929407223097906
2001	-0.9240587596654892
2002	-0.9388485271016843
2003	-0.9485362409676332
2004	-1.2594716117774265
2005	-1.6448685300656358
2006	-1.4899283441443583
2007	-1.0815535577323478
2008	-0.9222280808157038
2009	-1.1193150718053113
2010	-2.2241530885288507
2011	-2.282467800628132
2012	-1.1570425136128333
2013	-0.8297142610858553
2014	-0.6778801124486017
2015	-0.7591297884328557
2016	-1.0686342214763989
2017	-1.1758572915448462
2018	-0.7130948442115954
2019	-0.004957782374410027
2020	0.3078125402068329
2021	0.5107328758431693
2022	1.4096545149396928
2023	1.7456137392357272