Year	% of total primary
1995	11.8424797058105
1996	11.8912696838379
1997	12.0420303344727
2010	42.456298828125
2011	43.4656982421875
2012	44.3940582275391
2013	44.4282112121582
2014	44.7662696838379
2015	44.6708183288574
2016	44.7032699584961
2017	45.0717086791992
2018	45.0219612121582
2019	44.6821098327637
2020	44.4318695068359
2021	43.8058090209961
2022	43.6279487609863