Year	Percent
1990	6.896
1991	7.358
1992	7.92
1993	8.409
1994	8.892
1995	9.062
1996	9.452
1997	9.876
1998	10.122
1999	10.078
2000	10.076
2001	9.954
2002	9.531
2003	9.711
2004	9.916
2005	11.122
2006	11.082
2007	9.879
2008	8.794
2009	9.618
2010	8.676
2011	9.11
2012	8.321
2013	8.167
2014	8.868
2015	8.965
2016	8.932
2017	8.804
2018	8.675
2019	8.547
2020	8.419
2021	8.291
2022	8.162
2023	8.034
2024	7.906
2025	7.778
2026	7.649
2027	7.521
2028	7.393
2029	7.265
2030	7.136