*Excludes Observations that spanned multiple years

Pre 19702
19700
19710
19720
19730
19740
19750
19760
19770
19780
19790
19800
19810
19820
19830
19840
19850
19860
19870
19880
19890
19904
19918
19923
199315
19949
19958
19960
19970
19980
19991
20000
20010
20021
20031
20043
20050
20064
20073
20082
20091
20108
20117
20122
20136
20141
20151
20163
20172
20185
20194
20200
20211
20221
20230
20240
Total106