Year	Percent
1990	3.4
1991	3.38
1992	2.52
1993	2.07
1994	2.02
1995	2.17
1996	1.4
1997	0.61
1998	1.03
1999	0.8
2000	1.04
2001	0.89
2002	1.06
2003	1.08
2004	0.76
2005	1.63
2006	2.1
2007	2.14
2008	2.01
2009	2.25
2010	2.33
2011	2.99
2012	3.38
2013	3.4
2014	3.72
2015	4.22
2016	4.33
2017	4.521
2018	4.712
2019	4.903
2020	5.094
2021	5.285
2022	5.476
2023	5.667
2024	5.858
2025	6.049
2026	6.241
2027	6.432
2028	6.623
2029	6.814
2030	7.005