Year	Percent change
1991	120.2
1992	202.875
1993	268.414
1994	193.414
1995	0.218
1996	46.831
1997	35.709
1998	9.549
1999	7.418
2000	11.43
2001	6.353
2002	1.049
2003	5.046
2004	8.235
2005	12.655
2006	4.412
2007	8.193
2008	26.744
2009	6.399
2010	10.344
2011	7.741
2012	14.966
2013	8.628
2014	12.909
2015	5.88
2016	0.491
2017	4.623
2018	7.65
2019	8.437
2020	7.598
2021	7.526
2022	6.963
2023	6.922
2024	7.118