Year	Number
1990	7794
1991	7992
1992	8173
1993	8357
1994	8536
1995	8712
1996	8862
1997	8988
1998	9096
1999	9177
2000	9243
2001	9282
2002	9300
2003	9317
2004	9355
2005	9411
2006	9478
2007	9557
2008	9658
2009	9748
2010	9828
2011	9915
2012	9998
2013	10062
2014	10097
2015	10144
2016	10177
2017	10173
2018	10149
2019	10075
2020	10011
2021	9938
2022	9896