Year	%
1997	24.8946822268514
1998	26.623904342098598
1999	20.3028125276527
2000	22.4684125289362
2001	7.51935838730666
2002	8.38897900963515
2003	6.86157834709024
2004	5.84942897785903
2005	7.10836745413783
2006	10.3252097119653
2007	11.6173225125878
2008	9.71867709909718
2009	4.12872610990345
2010	3.86407099621587
2011	6.321793386004259
2012	5.14423090978369
2013	3.91849491068632
2014	4.0939824094056
2015	2.56570071628501
2016	2.76371339058327
2017	5.71000342586901
2018	2.3868
2019	1.6101
2020	2.4257
2021	2.7138
2022	1.958