*Excludes Observations that spanned multiple years

Pre 19709
19704
19714
19721
19731
19741
19750
19760
19772
19781
19791
19801
19811
19820
19830
19840
19850
19860
19870
19881
19894
19901
19914
19922
19934
199410
199513
199613
19971
19982
19999
20001
20011
20020
200315
20047
200534
2006103
200728
2008206
2009240
2010108
201144
201287
2013117
2014164
201587
201618
20172
Total1352