Year	Percent change
1993	142.445
1994	-5.04
1995	12.408
1996	6.71
1997	7.043
1998	-7.961
1999	-17.078
2000	4.657
2001	7.208
2002	15.906
2003	20.724
2004	16.548
2005	5.292
2006	37.264
2007	61.541
2008	4.505
2009	-19.998
2010	-2.719
2011	19.042
2012	23.308
2013	8.631
2014	-14.559
2015	-5.545
2016	-10.822
2017	-17.343
2018	12.581
2019	10.18
2020	5.177
2021	6.298
2022	2.989
2023	2.475
2024	2.399