Year	Number
2000	168000
2001	174000
2002	180000
2003	185000
2004	191000
2005	196000
2006	199000
2007	200000
2008	199000
2009	195000
2010	189000
2011	183000
2012	178000
2013	163000
2014	163000
2015	158000
2016	152000
2017	147000
2018	142000
2019	137000
2020	133000