Year	Percent
1990	5.636
1991	5.749
1992	4.652
1993	3.756
1994	3.902
1995	6.639
1996	6.339
1997	6.053
1998	6.376
1999	6.715
2000	6.965
2001	7.223
2002	7.49
2003	8.67
2004	8.36
2005	8.15
2006	10
2007	9.6
2008	11.89
2009	11.832
2010	11.775
2011	11.717
2012	11.66
2013	14.657
2014	15.907
2015	15.397
2016	14.9
2017	15.141
2018	15.381
2019	15.622
2020	15.863
2021	16.104
2022	16.344
2023	16.585
2024	16.826
2025	17.066
2026	17.307
2027	17.548
2028	17.789
2029	18.029
2030	18.27