Year	Percent change (Units)
2013	6.051
2014	-0.307
2015	-8.175
2016	-10.252
2017	3.956
2018	0.276
2019	-3.115
2020	-12.218
2021	17.597
2022	12.622
2023	3.348
2024	6.629
2025	4.852
2026	4.667
2027	4.209
2028	4.045
2029	4.408