Year	% of total primary
1991	0
1992	0
1993	0
1994	0
1995	0
1996	0
1998	0
1999	0
2000	0
2001	0
2002	0
2003	0.0844800025224686
2004	0.136899992823601
2005	0.170389994978905
2006	0.220770001411438
2007	0.260969996452332
2008	0.311260014772415
2009	0.333099991083145
2010	0.318549990653992
2011	0.304280012845993
2012	0.312730014324188
2014	0.459719985723495
2015	0.571020007133484
2017	0.599940001964569
2018	0.701409995555878
2019	0.768679976463318
2020	0.954919993877411
2021	0.985979974269867
2022	1.06163001060486