Year	Percent
1990	0.797
1991	0.72
1992	0.812
1993	0.915
1994	1.031
1995	1.162
1996	1.309
1997	1.475
1998	1.661
1999	1.87
2000	2.105
2001	2.369
2002	2.664
2003	2.996
2004	3.368
2005	3.784
2006	4.249
2007	4.768
2008	5.347
2009	5.992
2010	6.71
2011	6.56
2012	6.517
2013	6.474
2014	6.432
2015	6.39
2016	6.588
2017	6.812
2018	7.036
2019	7.261
2020	7.485
2021	7.709
2022	7.934
2023	8.158
2024	8.382
2025	8.607
2026	8.831
2027	9.056
2028	9.28
2029	9.504
2030	9.729