Year	%
2012	3.11552650685681
2013	2.82286034908823
2014	2.832816419541
2015	3.021368902847
2016	3.13539021739587
2017	3.01513440026541
2018	2.84180413882467
2019	2.28627227440686
2020	2.07201818483434
2021	1.89364268200428
2022	1.65068335655342
2023	1.54305460414344