*Excludes Observations that spanned multiple years

Pre 19704
19700
19710
19720
19730
19740
19750
19760
19770
19780
19790
19800
19810
19821
19830
19840
19850
19860
19875
19880
19894
19901
19915
19925
199313
19941
199541
199620
199714
19985
19994
200010
20016
20025
200312
200413
20059
20069
200711
200815
200911
201017
201114
201213
201322
201413
201518
201618
201711
201812
20195
20209
20216
20226
20234
20240
Total392