*Excludes Observations that spanned multiple years

Pre 197061
19700
19710
19720
19730
19741
19755
19762
19776
19782
19793
19803
19811
19820
19833
19842
19858
198614
198713
198837
198938
1990353
199156
199220
199311
19948
199559
199616
1997887
1998736
1999394
20001825
20012055
20021520
20035327
20041612
20053067
20061166
20071179
20081122
20093299
20102421
20111819
2012835
2013565
2014775
20151067
20161051
2017813
2018142
20190
Total34399