*Excludes Observations that spanned multiple years

Pre 19700
19700
19711
19720
19730
19741
19750
19760
19770
19780
19790
19800
19810
19820
19830
19840
19850
19860
19871
19884
19892
199022
19917
199210
199316
19948
19953
19963
19971
19984
19992
20001
20011
20021
200317
200420
200512
200620
200721
200811
200925
201034
201115
201230
201326
201434
201530
201620
201730
201815
201924
202012
202112
20226
20231
20243
Total506