*Excludes Observations that spanned multiple years

Pre 19703
19700
19710
19720
19738
19740
19750
19760
19770
19781
19790
19800
19810
19821
19830
19843
19852
19860
19871
19883
19890
19900
19910
19920
19930
19940
19952
19960
19970
19980
19990
20000
20013
20020
20030
20040
20050
20060
20075
200845
200921
201084
2011284
2012137
2013180
2014383
2015169
20161014
20171507
2018120
2019434
2020118
2021149
202257
202353
20246
Total4793