Year	%
2001	16.484847385444013
2002	16.294942381801395
2003	15.652843220625375
2004	17.342525143171933
2005	16.97184380009191
2006	15.563390364064325
2007	17.369790680122044
2008	15.434347235849943
2009	18.444265678178922
2010	19.58752519920491
2011	16.8960727250315
2012	18.12893408336648
2013	19.68497736804626
2014	19.262494464255383
2015	20.553117984241844
2016	22.029616761257053
2017	21.889413543389903
2018	19.295135770897197
2019	19.7805652631531
2020	23.08371653714093
2021	21.60757034909528
2022	22.83696317854561
2023	20.268949291536345