*Excludes Observations that spanned multiple years

Pre 197055
19700
19710
19720
19731
19741
19752
19760
19772
19780
19792
19803
19810
19821
19831
19840
19850
19861
19870
19880
19890
19902
19915
19924
19933
19948
19956
19962
19976
19983
19992
20001
20017
20020
20031190
2004181
20051794
200669
2007324
2008154
20091140
201063
201163
201212
201346
201467
201565
2016186
2017195
201827
Total5694