Year	Percent change (Units)
2013	-0.450
2014	1.266
2015	-7.795
2016	-6.054
2017	3.531
2018	0.365
2019	-2.278
2020	-18.296
2021	25.899
2022	-1.201
2023	-4.665
2024	7.345
2025	3.990
2026	3.731
2027	3.436
2028	3.257
2029	3.541