Year	%
1996	3.452945
1997	3.452945
1998	3.452945
1999	3.452945
2000	3.452945
2001	2.971282
2002	2.971282
2003	2.971282
2004	2.601649
2005	4.149299
2006	3.170393
2007	6.034483
2008	3.170393
2010	1.728691
2011	1.712274
2012	3.804426
2013	3.890671
2015	3.895012
2019	3.675694
2021	2.703964