Year	Percent change
1999	21.587
2000	14.194
2001	6.227
2002	-2.692
2003	18.35
2004	12.202
2005	6.156
2006	18.567
2007	-14.128
2008	6.952
2009	-0.82
2010	10.569
2011	4.27
2012	-0.322
2013	8.624
2014	4.614
2015	9.715
2016	5.741
2017	14.671
2018	3.467
2019	3.57
2020	6.006
2021	5.467
2022	5.264
2023	5.318
2024	6.203