*Excludes Observations that spanned multiple years

Pre 19703
19700
19714
19720
19730
19740
19750
19760
19771
19781
19790
19801
19810
19825
19830
19843
198540
198635
198766
1988195
198921
199010
1991108
1992106
1993186
1994143
1995176
1996106
199797
19988
199957
200038
200149
200237
200335
200466
200523
200633
200745
200860
200946
201037
201163
201258
201345
201449
201540
201656
201740
201825
201946
202054
202191
202247
202338
202450
Total2543