*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
19900
19910
19920
19930
19940
19950
19961
19971
19981
19991
20000
20010
20020
20030
20040
20050
20060
20071
20080
20090
20108
20110
20124
20139
20143
20152
20165
20174
20183
20192
20202
20212
20220
20230
20240
Total51