Year	Percent change (Units)
2012	1.200
2013	5.655
2014	2.747
2015	4.589
2016	-1.275
2017	9.500
2018	2.994
2019	3.627
2020	-2.560
2021	3.308
2022	2.433
2023	2.800
2024	3.700
2025	3.900
2026	4.000
2027	4.100
2028	4.300
2029	4.500