Year	Percent change (Units)
1996	17.380
1997	9.567
1998	50.806
1999	34.147
2000	8.044
2001	16.440
2002	12.623
2003	5.132
2004	6.068
2005	5.200
2006	10.719
2007	-10.192
2008	-8.188
2009	11.207
2010	5.471
2011	15.417
2012	11.039
2013	18.456
2014	14.802
2015	21.497
2016	13.567
2017	6.843
2018	13.656
2019	18.018
2020	-3.381
2021	23.673
2022	-7.191
2023	-11.497
2024	10.333
2025	8.330
2026	7.376
2027	7.377
2028	7.277
2029	6.819