Year	Percent
1990	1.91
1991	1.68
1992	1.73
1993	1.69
1994	1.49
1995	1.57
1996	1.65
1997	1.75
1998	1.58
1999	1.6
2000	1.39
2001	1.73
2002	1.81
2003	1.78
2004	1.85
2005	2.17
2006	2.29
2007	2.48
2008	2.59
2009	2.69
2010	2.74
2011	3.06
2012	3.29
2013	3.63
2014	3.89
2015	4.12
2016	4.47
2017	4.589
2018	4.709
2019	4.828
2020	4.947
2021	5.066
2022	5.186
2023	5.305
2024	5.424
2025	5.544
2026	5.663
2027	5.782
2028	5.901
2029	6.021
2030	6.14