Year	Percent change
1997	7.053
1998	10.824
1999	11.04
2000	4.398
2001	3.48
2002	5.487
2003	6.886
2004	7.483
2005	6.179
2006	8.778
2007	10.975
2008	5.548
2009	2.986
2010	11.241
2011	2.041
2012	-1.373
2013	2.372
2014	1.952
2015	4.879
2016	1.832
2017	6.716
2018	1.515
2019	3.017
2020	3.042
2021	3.042
2022	3.021
2023	2.982
2024	3.015