*Excludes Observations that spanned multiple years

Pre 19706
19701
19711
19720
19730
19741
19750
19760
19772
19780
19792
19800
19810
19820
19830
19840
19850
19861
19871
198819
19899
19909
199183
199264
199361
19949
199574
199612
199712
19984
199916
20007
200115
20022
20030
200414
20056
20067
20072
200824
200910
20101
20118
20121
20132
20145
20151
201613
201712
201825
201924
202012
202126
202259
202347
202430
Total740