*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19740
19750
19760
19770
19780
19790
19801
19810
19820
19830
19840
19850
19860
19870
19880
19890
19900
19910
19920
19930
19940
19950
19960
19970
19980
19991
20000
20011
20020
20031
20041
20051
20062
20072
20081
20097
20100
20110
20126
20136
201421
20150
20161
20175
20185
20195
20206
202119
202223
202321
202412
Total148