*Excludes Observations that spanned multiple years

Pre 19702
19700
19711
19720
19731
19740
19750
19760
19771
19781
19792
19802
19811
19820
19830
19841
19850
19861
19870
198842
19890
199019
1991130
199259
199366
199420
199580
199611
199735
19983
199926
200011
200124
200224
20034
200445
20057
20064
20072
200823
200918
201026
201135
20125
201312
20146
20150
201619
201720
201843
201944
202023
202166
202277
202387
20248
Total1137