*Excludes Observations that spanned multiple years

Pre 19705
19700
19712
19720
19730
19740
19751
19760
19771
19784
19792
19801
19810
19824
19830
19847
198524
198629
198747
1988175
198919
199033
1991122
199291
1993116
199443
1995110
199676
199755
199823
199924
200019
200134
200222
20034
200418
200511
20067
200718
200823
200919
201012
201122
201223
201321
201419
201523
201621
201732
20189
201912
20206
202126
202223
202339
20249
Total1486