*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19732
19740
19750
19760
19770
19782
19790
19801
19810
19821
19838
19841
19855
19864
198714
198830
198910
199014
199121
199245
199340
199413
199513
199616
199715
199813
199914
200017
200120
20026
200325
200431
200522
200638
200754
200844
200945
201058
201159
2012106
2013138
201484
201561
201645
201752
201836
201921
202010
202119
20229
202310
20244
Total1296