Year	Percent change
2001	1.531
2002	5.051
2003	2.914
2004	2.369
2005	3.221
2006	4.19
2007	2.285
2008	10.443
2009	-0.283
2010	-1.853
2011	0.501
2012	1.417
2013	2.008
2014	1.073
2015	3.144
2016	3.511
2017	4.12
2018	4.169
2019	3.681
2020	3.459
2021	3.377
2022	3.1
2023	2.881
2024	2.393