Year	%
2006	3.79492045431925
2007	3.81390595309035
2008	3.61200383000281
2009	4.58153542349424
2010	5.09505050694966
2011	4.98718024999289
2012	5.12553014876497
2013	5.36846249339605
2014	5.21248631883844
2015	5.37707549029426
2016	6.19177596311036
2017	6.89234780812498
2018	6.87103074202291
2019	7.50821379217828
2020	7.26713946592396