Year	Percent change
2003	1.339
2004	1.429
2005	1.687
2006	2.036
2007	2.537
2008	4.096
2009	2.418
2010	2.595
2011	1.999
2012	2.827
2013	1.6
2014	1.11
2015	0.15
2016	0.57
2017	1
2018	1.595
2019	1.636
2020	1.671
2021	1.732
2022	1.786
2023	1.812
2024	1.812