Year	Number
1996	205.42
1997	224.04
1998	234.29
1999	228.5
2000	220.1
2001	239.09
2002	306.4
2003	258.65
2004	304.27
2005	363.38
2006	381.82
2007	380.85
2008	421.89
2009	472.91
2010	560.82
2011	548.88
2012	632.65
2013	582
2014	587.02
2015	598.66
2016	664.72
2017	625.78
2018	706.71
2019	663.46
2020	683.91