Year	Number
1992	169794
1994	166196
1995	164952
1996	164163
1997	168004
1999	150568
2000	130573
2001	126294
2002	110321
2003	95076
2004	99617
2005	103680
2006	118593
2007	147055
2008	168088
2009	179600
2010	189481
2011	173672
2012	163921
2013	175396
2014	177558
2015	185509
2017	210466
2018	211207
2019	217821