Year	Percent change (Units)
2013	2.800
2014	1.300
2015	0.292
2016	1.214
2017	6.091
2018	3.221
2019	3.130
2020	4.833
2021	5.667
2022	6.056
2023	6.601
2024	4.300
2025	3.700
2026	3.500
2027	3.300
2028	3.100
2029	2.600