Year	annual %
1967	-2.757806122869667
1968	6.498621926609147
1969	-0.4629410152689246
1970	3.1332470207049425
1971	-2.9273956773749603
1972	-2.6617215081125636
1973	6.04653224657865
1974	2.7791589305563207
1975	9.091725753365054
1976	4.125901515864456
1977	0.25991507514314094
1978	2.9925466786358044
1979	-4.476602678579695
1980	2.804921315201696
1981	-0.052411227176946795
1982	-4.048783703787677
1983	7.079488567766788
1984	-0.13455427303188117
1985	-4.423060789784614
1986	0.22450980823217037
1987	-1.4195557250013593
1988	0.46199622586384237
1989	1.7758036323223223
1990	-0.5097696096357396
1991	-0.977138988485919
1992	-0.6216278389415635
1993	-0.6167922284862044
1994	-2.9662738360795515
1995	-2.064070168169252
1996	-0.7267089897740533
1997	1.8786925620641455
1998	0.5093724330467637
1999	3.3287587830328533
2000	2.48810279380524
2001	2.8028857700792713
2002	-5.968645508231418
2003	3.8654393462896053
2004	3.997774411767807
2005	-5.183078010575855
2006	-3.5149243064189193
2007	-0.08556112555207562
2008	3.0073688640315197
2009	3.3957012643169406
2010	2.6743532758879383
2011	-10.932076442547483
2012	2.0347103740209604
2013	-0.21868797764615522
2014	-4.296675101952488
2015	1.0970504894107052
2016	-0.8754734067359919
2017	2.0063076751332574
2018	4.439494294252782
2019	3.5137937176061342
2020	-1.9530836690579747
2021	2.6276356500391813
2022	2.3558957893588826
2023	2.745352800673629