Year % of total secondary 2010 1.52556002140045 2011 1.45679998397827 2012 1.72666001319885 2013 1.89375996589661 2014 1.89303004741669 2015 2.00559997558594 2016 2.37139010429382 2017 2.59334993362427 2018 2.74793004989624 2019 2.45847988128662 2020 2.96336007118225 2021 2.83264994621277 2022 2.82172989845276