*Excludes Observations that spanned multiple years

Pre 1970104
19704
19714
19720
19730
19741
19751
19763
19772
19780
19795
19804
19811
19823
19831
19845
19852
19863
19870
19880
19894
19902
19914
19928
19935
199410
19954
19969
19978
199813
199923
200045
200168
200286
200342
200424
200512
200618
200740
200841
200938
201039
201129
201218
2013110
201471
2015104
2016119
201775
201842
201927
20205
202175
202283
202310
202415
20259
Total1478