Year	Percent change (Units)
1996	11.384
1997	-16.240
1998	6.506
1999	10.770
2000	21.367
2001	25.748
2002	47.525
2003	19.674
2004	-9.592
2005	21.350
2006	-18.916
2007	3.539
2008	-9.829
2009	-21.728
2010	26.476
2011	7.694
2012	11.565
2013	12.756
2014	8.004
2015	10.941
2016	20.439
2017	16.846
2018	10.390
2019	23.225
2020	-19.831
2021	-3.208
2022	66.924
2023	47.146
2024	-13.446
2025	-4.528
2026	5.367
2027	6.517
2028	6.032
2029	5.459