*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
200136
200222
20032
200412
20057
20067
200711
200818
200918
20109
201122
201223
201320
201417
201523
201619
201728
20180
20192
20201
20210
20220
Total1330