Year	Number
1987	86970
1988	87266
1989	90851
1990	108944
1991	105742
1992	108489
1993	106141
1994	105916
1995	103572
2011	149153
2012	149886
2016	150320
2017	151803
2018	155543
2019	158189.5
2020	153655
2021	155477