*Excludes Observations that spanned multiple years

Pre 19700
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
19951
19960
19972
19981
19990
20000
20010
20021
20031
20040
20052
20060
20071
20084
20091
20101
20110
20120
20130
20142
20152
20162
201738
201842
2019236
2020698
2021325
2022441
2023108
20243
Total1912