Year	Number
1997	373271895.5398422
1998	406716446.70811445
1999	431290829.6361643
2000	457405981.1732665
2001	453096545.8150362
2002	457281193.2764228
2003	467949386.2114748
2004	477522968.0938981
2005	504648379.3848501
2006	516208188.51746434
2007	543821360.0669641
2008	562146928.1747748
2009	539873168.0343571
2010	554242170.5363584
2011	573579334.712143
2012	585069762.754391
2013	608350743.3568738
2014	587759571.4305015
2015	604738772.8867865
2016	626599435.232651
2017	682564892.5620246
2018	729507921.2313681
2019	740715759.48271