Year	Number
1990	5154451
1991	4544317
1992	4789360
1993	5414280
1994	5941736
1995	5227228
1996	3699466
1997	2943581
1998	2868423
1999	3037620
2000	3065611
2001	2693107
2002	2759299
2003	2476146
2004	2404517
2005	2266751
2006	2171533
2007	2085686
2008	1880714
2009	1920182
2010	1954846
2011	2310884
2012	2533421
2013	2757617
2014	3579313
2015	4183415
2016	4848568
2017	6710452
2018	6691915
2019	6605693
2020	6715560
2021	7022880
2022	7030785
2023	7706189