Year	%
1989	98.1748
1994	99.21765
1998	70.96005
1999	56.76496
2000	56.5235
2001	51.93149
2002	52.6596
2003	51.53139
2004	50.06915
2005	40.7384
2006	39.9897
2007	39.8988
2008	37.27554
2009	40.49057
2010	39.69631
2011	39.38807
2012	38.73507
2013	38.26114
2015	36.38932
2016	39.2642
2019	39.04702
2020	40.09254
2021	40.36287