*Excludes Observations that spanned multiple years

Pre 19701
19700
19710
19720
19730
19740
19750
19760
19770
19780
19790
19800
19810
19820
19831
19840
19850
19860
19870
19880
19890
19901
19910
19925
19934
19940
19955
19960
19971
19980
19990
20000
20010
20020
20030
20042
20050
20060
20074
20082
20097
20100
20117
20120
20131
20141
20150
20160
20170
20180
20192
20200
20210
20221
20230
20240
Total45