*Excludes Observations that spanned multiple years

Pre 197072
19700
19711
19721
19731
19741
19750
19764
19772
19784
19791
19801
19811
19820
19832
19842
19851
19863
19870
19881
19890
19902
19917
19921
19931
19943
19951
19960
19970
19982
19992
20000
20012
20021
20031
20042
20054
20060
20074
200812
20091
20107
201122
20121
20135
20141
20152
20160
20173
20182
20199
20208
20218
20221
20230
20240
Total213