Year % of total secondary 2001 5.35483980178833 2008 2.27000999450684 2009 1.62944996356964 2016 4.38094997406006 2017 7.45931005477905 2019 10.3384304046631 2020 11.4479598999023 2021 12.1693096160889 2022 11.6447095870972