*Excludes Observations that spanned multiple years

Pre 19704
19700
19716
197232
197313
19740
19751
19760
19770
19780
19791
19800
19810
19821
19839
19841
198527
198660
1987100
1988444
198930
1990106
1991235
1992323
1993181
199484
1995108
199641
199734
199815
199979
200071
200171
200225
200325
200462
200549
200610
2007123
200810
200928
2010246
201133
201211
201312
201421
201525
201622
201719
201811
201911
20200
Total2820