Year	Percent (Units)
2011	0.020
2012	0.014
2013	0.013
2014	0.015
2015	0.017
2016	0.018
2017	0.019
2018	0.019
2019	0.019
2020	0.019
2021	0.018
2022	0.018
2023	0.018
2024	0.018
2025	0.018
2026	0.019
2027	0.019
2028	0.019
2029	0.019
