Year	annual %
1971	2.349301203174207
1972	4.204361374066252
1973	4.960328504525904
1974	-0.8717566961019259
1975	-0.8691634858354718
1976	4.095673259473756
1977	3.0251019451716985
1978	3.833630961278047
1979	1.971112148940989
1980	-1.084784157332848
1981	0.9976685498585027
1982	-0.5780475866372825
1983	2.3547649381950038
1984	5.356630253528991
1985	2.910391288705668
1986	2.841230092131667
1987	3.172492414785566
1988	4.428497664796694
1989	2.48711511958804
1990	1.7250160457685126
1991	0.21396593561601662
1992	1.7385988944991055
1993	0.7952514895050626
1994	3.0367784306510686
1995	2.623437743213586
1996	2.6891611881662953
1997	3.010836338039354
1998	2.7323341404604378
1999	2.979383334408837
2000	3.4233620112026983
2001	1.2769105296700474
2002	0.9333805484476727
2003	1.4584682978388486
2004	2.744172281116036
2005	2.130627029364746
2006	2.4651241567237037
2007	1.2653191612560732
2008	-1.5948510044843829
2009	-2.754871856653324
2010	2.7323930266828853
2011	1.2655398733425471
2012	1.106473459788205
2013	0.9228559283900069
2014	1.9136296885545931
2015	2.2331720751985102
2016	1.2097425851803791
2017	2.2391900712677
2018	1.7777566821286257
2019	1.6886451245609067
2020	-4.551937573500453
2021	5.920067683555132
2022	1.953157754079598