Year	Number
1996	1.04418814182281
1998	0.672074854373932
2000	0.638421952724457
2002	0.267433613538742
2003	0.256376087665558
2004	0.341849148273468
2005	0.374146014451981
2006	0.640256404876709
2007	0.610765516757965
2008	0.571345150470734
2009	0.532929718494415
2010	0.463277846574783
2011	0.506770431995392
2012	0.514070093631744
2013	0.551252126693726
2014	0.662211179733276
2015	0.568533480167389
2016	0.285072565078735
2017	0.356126040220261
2018	0.393016159534454
2019	0.452138632535934
2020	0.433581084012985
2021	0.331181913614273
2022	0.365232169628143