Year % (cumulative) 2001 34.8424491882324 2008 28.7348403930664 2009 29.0186595916748 2010 2.94284248352051 2011 3.19326162338257 2013 3.43733763694763 2014 3.40443229675293 2015 3.6451301574707 2016 3.83491563796997 2017 4.08508443832397 2018 3.91175127029419 2019 4.19189119338989 2020 4.14797973632812