*Excludes Observations that spanned multiple years

Pre 19704
19700
19710
19720
19730
19740
19751
19760
19770
19780
19790
19800
19810
19821
19830
19840
19850
19860
19870
19883
19890
19900
19910
19922
19935
19943
19951
19961
19971
19980
19990
200012
200114
20021
20030
20042
20054
20060
20070
20083
20091
20107
20117
20120
20131
20141
20150
201611
20170
20184
20192
20201
20213
20224
20230
20241
Total101