Year	Number
1993	1459.7348217993997
1994	327.97479892878266
1995	2.462694953196088
1996	1.6740772934635646
1997	1.1682653783118908
1998	1.063571272283899
1999	0.7997148254014853
2000	1.263898712871284
2001	1.0180807595340013
2002	1.1234876402748852
2003	1.2946770237697085
2004	1.4253770887473398
2005	1.6513542494346927
2006	1.5376232030560117
2007	1.6082579330592905
2008	1.5985784445077427
2009	1.9643824341564187
2010	2.046592302139022
2011	1.7136540524350994
2012	1.8933769943878918
2013	1.620228964420088
2014	1.7622187494885946
2015	2.9428757735665614
2016	1.954361126016225
2017	1.8830277617307638
2018	2.11352171735871
2019	2.401920314158659
2020	2.208094528448689
2021	2.458395651633677
2022	2.2217582140225773
2023	1.9284512946653596