*Excludes Observations that spanned multiple years

Pre 19707
19700
19711
19720
19730
19740
19750
19760
19770
19780
19792
19800
19811
19821
19831
19844
19851
198612
198714
198879
198910
19909
199114
199229
199353
199414
199547
19963
199716
19981
199915
200019
200115
200216
20037
20046
200526
200613
20077
200816
20095
20100
201115
20123
20132
20144
20152
201612
20172
201817
201931
202049
202141
202264
202342
202410
Total758