*Excludes Observations that spanned multiple years

Pre 1970191
19701
19711
19720
19738
197413
19758
19761
19774
19781
19793
19802
19812
19826
19832
19847
19850
19864
19872
19881
19891
19902
199114
199212
199319
199440
199578
199684
1997100
1998103
199980
2000107
2001142
2002142
2003157
200488
200574
200677
200742
200858
2009115
2010125
201168
201221
201357
201457
201557
2016146
2017183
2018119
201985
202046
202173
202272
Total2901