*Excludes Observations that spanned multiple years

Pre 19703
19700
19710
19723
19734
19741
19752
19765
19776
19781
19791
19803
19812
19821
19831
19841
198511
19863
198716
198874
198910
199059
1991210
1992103
199348
199421
199519
199614
199740
19986
19994
20009
200179
20027
200349
200448
20057
200656
20076
200811
200912
20103
201121
201221
201340
201455
201553
201679
201770
201871
201973
20201
Total1443