Year	kg per hectare
1992	2741.1
1993	2791.1
1994	2268.3
1995	2063.2
1996	2191
1997	2405.7
1998	1889.9
1999	1501.5
2000	1949.7
2001	2000.7
2002	2477.8
2003	2433
2004	2986.1
2005	2848.5
2006	2550.5
2007	2880.9
2008	3549.7
2009	3367.9
2010	2808.3
2011	3241.4
2012	3479.1
2013	3007.8
2014	3720.5
2015	3690.2
2016	3207.3
2017	3358.7
2018	2723.9
2019	3095.6
2020	3539.9
2021	3018.7
2022	2971.1