Year	Number
1971	86999
1972	102222
1991	264419
1998	312333
1999	316343
2000	351357
2001	396876
2002	475637
2003	560197
2004	630102
2006	811797
2007	875120
2008	930200
2017	867961
2018	911950
2019	935701
2020	990576
2021	1062356