Year	Number
1995	15298000
1996	16695000
1997	16803000
1998	15806000
1999	16358000
2000	17819000
2001	16216000
2002	16523000
2003	13296000
2004	16831000
2005	17404000
2006	17535000
2007	17295000
2008	15987000
2009	15446000
2010	16637000
2011	16994000
2012	18491000
2013	17473000
2014	16903000
2015	16214000
2016	17116000
2017	17889000
2018	18954000
2019	20081000
2020	3174000