Year	Number
1997	12302
2000	12003
2001	12055
2003	12580
2008	14820
2009	14788
2010	14951
2011	14728
2012	14905
2013	15166
2014	15076
2015	15273
2016	15685
2017	15930
2018	15999
2019	16079
2020	15998
2021	16026
2022	16292