*Excludes Observations that spanned multiple years

Pre 19706
19700
19710
19720
19730
19740
19750
19760
19771
19780
19790
19800
19810
19820
19831
19840
19850
19860
19870
19880
19890
19901
19910
19920
19931
19940
19950
19961
19971
19981
19993
20006
200115
20025
20038
200421
200574
200697
200715
20084
200914
201021
201136
20123
20134
20140
201529
201616
20170
20180
20191
20203
20216
20221
20230
20240
Total395