*Excludes Observations that spanned multiple years

Pre 19707
19700
19710
19720
19730
19740
19750
19760
19770
19780
19790
19800
19810
19821
19830
19840
19850
19860
19870
19880
19890
19900
19911
19920
19936
19940
19954
19960
19973
19984
19990
20002
20017
20021
200317
200429
20058
200613
200718
200815
200920
201018
201112
201223
20134
201425
20155
201623
20176
201813
20194
20200
20214
20221
20230
20240
Total294