*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19740
19750
19760
19770
19780
19797
19802
19812
19820
19830
19842
19852
19860
19870
19884
19892
19902
19910
19920
19930
199447
1995108
199654
199787
199847
199982
200063
200128
200230
200338
200499
200551
200680
200787
200846
200944
2010123
201116
201237
201329
20140
20150
20160
20170
Total1219