Year	Number
1994	0.37537189663274567
1995	0.779330035412663
1996	0.7629075925743458
1997	0.5364784221841913
1998	1.0238917704202415
1999	0.5256390781492515
2000	0.547129693858705
2001	0.5487800161944107
2002	0.8990795166644486
2003	0.6536424976646452
2004	0.6039758566443492
2005	0.9248186825640223
2006	0.7107458763052533
2007	1.6531737956484858
2008	0.8750429185849838
2009	2.167617964392142
2010	1.5703806690424278
2011	1.894292211174196
2012	1.8883422524048568
2013	1.599238205107186
2014	1.2909595145351567
2015	1.3998486785259368
2016	1.7942136751852544
2017	2.2267870542634363
2018	1.922856170614192
2019	2.481979678117807
2020	2.316226193227325
2021	2.06616941996391
2022	2.0491033007720447
2023	1.8978804772327695