Year	Number
2005	0.8026643638890928
2006	0.7909998822284893
2007	0.9109638413955553
2008	0.7735813708026954
2009	1.0286510541015361
2010	1.201299937800022
2011	1.1099934915839968
2012	1.3013813709872295
2013	1.1506323757559305
2014	1.192235603646595
2015	1.2719024172450037
2016	1.2482413816078632
2017	1.05962442163198
2018	1.0191447041075214
2019	1.06697590603638
2020	1.551167134347743
2021	1.3496292930641578
2022	1.2277474246922448
2023	1.1343130753792559