Year	Number
1999	256995
2000	251916
2001	244962
2002	237615
2003	237225
2004	230847
2005	226114
2006	222765
2007	220352
2008	219185
2009	219467
2010	218418
2011	217482
2012	214795
2013	212233
2014	203312
2015	197538
2016	190899
2017	187383
2018	185638