*Excludes Observations that spanned multiple years

Pre 19702
19700
19718
19720
19730
19740
19750
19760
19774
19784
19792
19802
19810
19820
19833
19847
198586
198673
1987120
1988405
198967
199064
1991146
1992208
1993271
199482
1995230
1996192
1997190
199869
1999167
2000140
2001116
200247
200327
200452
200518
200630
200736
200818
200918
201021
201122
201231
201350
201428
201518
201641
201733
201841
201923
202028
202183
202223
202316
Total3362