Year	Number
1990	159803
1991	159771
1992	159768
1993	159635
1994	159388
1995	159506
1996	159724
1997	160167
1998	160550
1999	160649
2000	160604
2001	160616
2002	160557
2003	160449
2004	160082
2005	160121
2006	160493
2007	160982
2008	161650
2009	162219
2010	162764
2011	163329
2012	164049
2013	164748
2014	165605
2015	166323
2016	166545
2017	166708
2018	166495
2019	166237
2020	164821
2021	163265
2022	161649