*Excludes Observations that spanned multiple years

Pre 197028
19700
19710
19720
19730
19740
19750
19760
19772
19780
19792
19800
19812
19820
19830
19843
19856
19862
19873
19882
19893
19903
19914
19921
19932
19943
19953
19962
19970
19982
19993
20001
20014
20024
200319
200416
200526
200637
200710
20086
20093
20101
20115
201219
20132
20143
201529
201649
20177
20182
20191
202012
20218
20225
20230
20240
Total345