Year % of total secondary 1998 45.9166793823242 2002 48.2128486633301 2004 51.1916198730469 2005 52.1726608276367 2006 53.6706809997559 2007 54.6031303405762 2008 56.0731887817383 2009 56.9664993286133 2010 57.9086494445801 2011 58.9574394226074 2012 60.3736991882324 2013 60.4749717712402 2014 60.9525909423828 2015 61.2937889099121 2016 61.7345085144043 2017 61.8953895568848 2018 61.9125595092773 2019 62.1873588562012 2020 62.7354698181152 2021 62.7110595703125 2022 62.7988090515137