Year	Number
1979	894
1980	1095
1983	1651
1984	1759
1985	1898
1986	2077
1987	2409
1988	2565
1989	3696
1990	4096
1991	4695
1992	5255
1993	5876
1994	6464
1995	6978
2016	31413
2019	39571
2020	51082