Year	annual %
1977	4.007365560083059
1978	1.1863843924616617
1979	-1.0996933338603725
1980	-3.209699037416172
1981	-0.05187531353698205
1982	-4.935685784569188
1983	-3.513530429849453
1984	-0.11463563716195324
1985	-2.259887183949843
1986	-3.388533476733542
1987	3.9457337818359406
1988	3.701144050125066
1989	4.123017560811121
1990	5.1000937808231726
1991	5.955363175528021
1992	2.844797214189313
1993	4.243593134389073
1994	5.221178970387413
1995	4.628031235675294
1996	4.602160678159308
1997	5.28606067113418
1998	5.620825963232946
1999	-0.0206817578466314
2000	2.208013764445994
2001	1.7731380879035328
2002	2.459567703222149
2003	1.4629632167610964
2004	3.3624019771536666
2005	4.898736894915473
2006	5.170114973866106
2007	4.3133230143232595
2008	6.673569176916942
2009	2.7698146939595887
2010	3.189691921570841
2011	5.572044417328854
2012	2.7400463189876945
2013	6.640822609481489
2014	7.067064807423378
2015	7.143565281376723
2016	5.939047032287249
2017	2.946369632055948
2018	4.774746768878501
2019	2.6226061018922167
2020	-7.886606164050107
2021	4.575776760762523
2022	3.2481665820245382