Year	annual %
1968	0.0583333328330434
1969	4.02265345225706
1970	2.81024819857027
1971	3.87820263197536
1972	6.15488417411274
1973	11.2853107346838
1974	16.6010915093494
1975	31.6534233153685
1976	1.08309218710663
1977	11.3405856371037
1978	3.41965105587522
1979	9.65335985257029
1980	8.72902766072327
1981	5.91319372031626
1982	17.3763852168922
1983	11.6169845681475
1984	11.7840274796329
1985	13.0000576159794
1986	6.18477854456934
1987	-4.14072378633809
1988	-1.82668225079295
1989	0.447309340771316
1990	0.325098630183258
1991	-1.75355690199309
1992	-0.109942967085646
1993	-0.586434615120184
1994	32.2936668569551
1995	7.86400784570111
1996	2.75430663482409
1997	1.75316478097235
1998	1.15678070391341
1999	0.827250608272509
2000	0.731981981981609
2001	2.9745008391957
2002	2.33730187454302
2003	-0.0519970242714378
2004	0.51478178102298
2005	1.71133325855503
2006	2.1122858387711
2007	5.85330428467687
2008	7.34720236578404
2009	-2.24802147855337
2010	1.22868119673341
2011	3.40322829786971
2012	1.41822871177844
2013	0.710245486695272
2014	-1.09025507446895
2015	0.13521193363526
2016	0.837284942557434
2017	1.3181531484778
2018	0.460985642464282
2019	1.76011151192938
2020	2.54314685681652
2021	2.18032278088147
2022	9.69681899081073