Year	Percent change
1991	232.297
1992	-2.39
1993	13.502
1994	-6.904
1995	4.71
1996	-7.251
1997	-7.119
1998	5.405
1999	7.222
2000	1.786
2001	6.092
2002	-2.286
2003	9.131
2004	-2.447
2005	3.757
2006	-7.379
2007	0.105
2008	20.681
2009	-1.027
2010	-9.896
2011	7.777
2012	-9.367
2013	-11.419
2014	2.927
2015	21.488
2016	2.114
2017	69.697
2018	4.813
2019	10.108
2020	9.387
2021	5.886
2022	0.869
2023	1.025
2024	2.677