Year	kg per hectare
1992	2113.9
1993	1617.9
1994	1622.7
1995	1507
1996	1608.4
1997	1669.4
1998	1581.1
1999	2080
2000	2335.2
2001	2600.7
2002	2623.2
2003	2604.1
2004	2588.8
2005	2593.1
2006	2599.3
2007	2667.4
2008	2741.5
2009	2606.7
2010	2020.6
2011	2484.4
2012	2659.7
2013	2692.3
2014	2343.6
2015	3083.6
2016	3005.1
2017	2942.2
2018	3013.7
2019	3239
2020	3227.3
2021	3297.4
2022	3162.9