Year	Percent change
1990	-0.18
1991	35.717
1992	225.996
1993	85.005
1994	22.565
1995	7.794
1996	12.734
1997	33.167
1998	20.646
1999	0.389
2000	0.039
2001	3.12
2002	5.202
2003	2.363
2004	2.867
2005	2.363
2006	2.37
2007	2.96
2008	3.31
2009	2.231
2010	3.615
2011	3.443
2012	2.036
2013	1.925
2014	1.613
2015	1.868
2016	1.282
2017	1.987
2018	2.029
2019	1.999
2020	2.4
2021	2.8
2022	3
2023	3
2024	3