Year % 2001 1.834736158849292 2002 2.744542900228723 2003 3.7978895532876393 2004 4.228784231791288 2005 4.378865452871491 2006 1.816226771138384 2007 1.8209444434632804 2008 2.3997001870660055 2009 2.8628893884557 2010 3.0431899046343647 2011 4.426142762541983 2012 5.317356201926541 2013 10.85185080862441 2014 17.368724550588983 2015 23.994227153797905 2016 29.210508832609545 2017 31.26374576052967 2018 32.47358472403322 2019 32.21597765215897 2020 37.84030746111926 2021 40.45319193994183 2022 35.44239493459248 2023 36.29293045184096