Year	annual %
1971	11.447744120539753
1972	5.699993470245516
1973	7.66319264141697
1974	15.553609544625346
1975	16.42585393990059
1976	13.19399072077114
1977	6.982107250613183
1978	9.277243016149711
1979	7.502467667980312
1980	11.55925069201848
1981	14.92680568431446
1982	13.016869541956183
1983	9.717130374286924
1984	8.870829715028066
1985	7.423663027565823
1986	4.129587127287948
1987	4.620728111027276
1988	6.350238440914296
1989	5.34985898574476
1990	5.092584963798203
1991	3.225275110510651
1992	1.5456781658694752
1993	1.042016454068829
1994	0.46837432035114546
1995	2.055872290653298
1996	0.9801011924183598
1997	0.49670367499415136
1998	0.9784267326900675
1999	1.060456320238373
2000	2.1100932146846674
2001	3.402256828408184
2002	3.103083666671651
2003	6.532978066652319
2004	-0.538444084879913
2005	-3.229177082599918
2006	2.2383831453403786
2007	-0.04751534232148913
2008	-2.0133441801153396
2009	5.538635431525776
2010	2.0276049193381738
2011	2.884045659297115
2012	3.445331811921065
2013	1.0673725314318148
2014	0.9902735540047445
2015	8.14438057205848
2016	3.5377824581282624
2017	3.2664996424492045
2018	1.846720351745688
2019	0.7448630001940018
2020	0.703000441093323
2021	-0.41616829532064514