*Excludes Observations that spanned multiple years

Pre 19703
19700
19710
19720
19730
19740
19750
19760
19773
19780
19790
19800
19810
19820
19830
19840
198510
19867
19872
198839
19894
19905
199121
19928
19936
199411
199579
199658
199730
19983
199912
20007
200111
20028
200311
20048
200514
200610
20073
20089
200910
201013
20118
20125
20137
20145
20158
201616
20173
20189
201921
202012
202113
20224
202315
20245
Total536