Year	Number
1981	235100
1986	263100
1989	259000
1990	243300
1991	225700
1992	218400
1993	203100
1994	189100
1997	177679
1998	95708
1999	94863
2000	81476
2006	224145
2010	219642
2011	197257
2012	185026
2013	164240
2014	185590
2015	190238
2016	187279
2017	194062
2018	199116
2019	203284