Year	Number
1971	69714
1972	80605
1973	92101
1974	94292
1975	104730
1976	119482
1977	130102
1978	147563
1979	168971
1980	197248
1981	221940
1983	242126
1984	251417
1985	266801
1987	284925
1999	591549
2014	1418361
2015	1587348
2016	1727227
2017	1898243
2018	2040520
2019	2227143
2020	2387532
2021	2563544
2022	2522965