Year	Number
1972	43305
1973	43700
1974	44223
1975	44740
1976	48798
1977	43773
1978	42288
1980	44863
2013	68794
2014	65032
2015	62217
2016	62551
2017	61854
2018	60732
2019	59321
2020	58930
2021	59662
2022	59126