Year	Percent change
1993	1662.28
1994	1401.99
1995	176.275
1996	39.129
1997	17.441
1998	7.292
1999	8.408
2000	13.331
2001	8.375
2002	5.854
2003	6.452
2004	6.886
2005	7.541
2006	8.575
2007	10.783
2008	17.149
2009	7.296
2010	7.126
2011	8.329
2012	5.119
2013	5.83
2014	6.719
2015	6.656
2016	14.552
2017	7.43
2018	6.025
2019	5.464
2020	4.974
2021	4.376
2022	4.239
2023	4.047
2024	4.03