Year	annual %
1965	29.41348973607038
1966	8.157715839564922
1967	20.085201480550317
1968	5.5015993021227105
1969	16.845818863348217
1970	21.168089824031703
1971	13.740071639931475
1972	1.7594906377297777
1973	35.52998957176977
1974	32.79803420288416
1975	12.094648898192625
1976	34.166472137926434
1977	25.997638724911454
1978	10.279728556774243
1979	25.982505411158613
1980	8.096921678877719
1981	4.673553963260454
1982	1.3596692119942024
1983	11.75654929926212
1984	10.122634820755971
1985	17.234458857910276
1986	13.635954092030461
1987	10.312734796512835
1988	7.365891892076901
1989	-4.166507274651569
1990	5.59340301109034
1991	5.541572028465491
1992	12.440154255763696
1993	2.5221260080805723
1994	-3.717695432760152
1995	69.54812302843358
1996	8.610655978225527
1997	29.05761226725082
1998	3.5212431058636087
1999	7.895708539198111
2000	15.626694719975653
2001	4.298189815301581
2002	14.895796378976359
2003	17.53692954722777
2004	17.64673357414385
2005	19.091932620598886
2006	26.333114259349866
2007	33.41242179306791
2008	17.147464101446623
2009	3.9459363668979632
2010	20.17834640456382
2011	28.96509574552047
2012	13.192372383346385
2013	12.128480468602557
2014	17.168109327413088
2015	19.942050642206905
2016	8.679041305593056
2017	9.187797163517208
2018	18.694704218371353
2019	15.31243269297233
2020	21.288067047758286