Year	Number
1996	0.91466349363327
1998	0.954443454742432
2000	1.01925766468048
2002	0.92341160774231
2003	0.885519981384277
2004	0.879427552223206
2005	0.415122240781784
2006	0.391092598438263
2007	0.384942293167114
2008	0.387722581624985
2009	0.39220854640007
2010	0.518380045890808
2011	0.3601154088974
2012	0.492649018764496
2013	0.426174342632294
2014	0.774568855762482
2015	0.779747724533081
2016	0.998592257499695
2017	0.992373704910278
2018	0.968616604804993
2019	0.937967896461487
2020	1.03254508972168
2021	1.04016363620758
2022	1.04379844665527