*Excludes Observations that spanned multiple years

Pre 19706
19700
19712
19720
19730
19740
19752
19760
19770
19780
19791
19801
19810
19823
19830
19840
19852
19869
198751
1988117
198910
19902
199155
199226
1993103
199411
1995103
199643
199754
19983
199958
200039
200153
200227
20034
20048
200510
200613
20074
200822
20098
201019
201116
201223
201311
20146
20159
20167
201710
20189
201918
20208
20217
20226
202329
20240
Total1028