Year annual % growth 2012 10.246328913131578 2013 12.018575191470958 2014 14.544550478457793 2015 11.09060930425268 2016 14.836142665750344 2017 10.455432552500426 2018 10.320136636838996 2019 11.181293634689737 2020 8.307293221385194 2021 6.4545175531304295