Year	Number
1970	1558
1971	1350
1972	462
1974	1997
1975	1107
1978	414
1982	1886
1983	3321
1984	1613
1985	1709
1986	1716
1990	1850
1993	1873
1998	1602
1999	1358
2001	32
2004	284
2005	499
2006	136
2012	384
2013	665
2014	69.3290023803711
2015	136.315002441406
2018	60.875
2019	198
2020	203.128005981445
2021	242.742004394531
2022	100.035003662109