Year	kg per hectare
2000	5328.8
2001	5142.3
2002	5748
2003	5678
2004	6396.6
2005	5634.8
2006	5596.8
2007	5202.9
2008	6106.4
2009	6202.1
2010	5593.3
2011	5193.2
2012	5522.7
2013	5967.4
2014	5935.5
2015	6027.1
2016	4999.6
2017	5339.5
2018	5993.5
2019	5972.6
2020	5736.8
2021	5593.3
2022	6154.3