Year	annual %
1968	3.3404946602880017
1969	0.006016231878902545
1970	5.283912338744543
1971	3.849234319674906
1972	6.068616491878174
1973	-1.6902027516702844
1974	-1.9528876904867332
1975	11.127405817183018
1976	14.109055080324879
1977	7.2644830899451875
1978	-0.6320287342686157
1979	8.556846032908737
1986	3.2311403285825833
1987	0.19717027393903663
1988	7.1608069927380456
1991	12.326930366024143
1992	-3.3693033568036412
1993	3.5173764549547855
1994	2.60140516683569
1995	0.24664047364622377
1996	7.001305031740273
1997	4.621562740835088
1998	7.725979785732704
1999	6.267295794274091
2000	0.2378566935776263
2001	11.057695827919531
2002	1.7108750336526555
2003	12.244466192995418
2004	1.6152631799711656
2005	6.611123625262664
2006	4.064946316693607
2007	3.5895216302413075
2008	5.281823066592111
2009	3.053641222732267
2010	5.990086602016305
2011	3.479443465339486
2012	-1.0773766392368884
2013	2.980101901997841
2014	7.785890314772857
2015	6.634119641539769
2016	5.305354488176377
2017	4.792865311909537
2018	5.139727670755818
2019	3.616407918289852
2020	-1.6920022250711213
2021	2.70067772555727
2022	4.067285984010155
2023	4.538107112510431