Year	annual %
1971	8.06333040344083
1972	6.8838278946896025
1973	8.614293533294997
1974	6.92211401960185
1975	3.4355984311914938
1976	5.011517760018208
1977	4.564828322999247
1978	3.954106142360075
1979	7.560477977695143
1980	6.770317676978024
1981	0.08233131192932319
1982	-2.332403740962775
1983	-2.586867091931012
1984	3.9514347130582337
1985	3.6471583929185556
1986	3.844081393193676
1987	4.077419663607401
1988	0.5473701138038507
1989	5.372798490892933
1990	-3.0593165365273762
1991	3.997189230580858
1992	3.169011862775804
1993	4.842989950935461
1994	4.78524868637669
1995	1.184894262045006
1996	4.10777512777733
1997	5.56920619674743
1998	2.7254923569975062
1999	-0.0016055361531499557
2000	3.512121649098262
2001	0.2016787744763633
2002	0.18006812510564885
2003	2.4299692304168303
2004	4.390497138201695
2005	3.8398243515362935
2006	6.135766778135292
2007	5.563606515246477
2008	3.904174933526704
2009	-2.3027388376609395
2010	6.303696332483824
2011	4.523031353017572
2012	2.688840707009305
2013	3.2249152742278966
2014	1.3525706809637512
2015	0.6027453036087564
2016	-0.561794758111418
2017	1.8626289807615706
2018	1.0717495732214104
2019	0.7305096241055935
2020	-6.185463530761027
2021	6.595931914475244
2022	4.065996164479074
2023	2.0729863115890907