Year	Number
1996	1293.65
1997	1422.85
1998	1366.28
1999	1498.84
2000	1552.28
2001	1646.31
2002	2060.22
2003	2097.28
2004	2238.49
2005	2533.11
2006	3136.05
2007	3285.42
2008	3735.16
2009	3964.76
2010	4121.66
2011	4442.92
2012	4966.91
2013	5004.13
2014	5746.21
2015	6052.08
2016	6636.6
2017	6759.96
2018	7437.65
2019	7875.81
2020	8979.79