*Excludes Observations that spanned multiple years

Pre 19706
19700
19712
19721
19730
19740
19750
19760
19770
19780
19791
19801
19811
19820
198316
19842
19850
198630
198716
198833
198920
199018
199115
1992108
199371
199450
1995117
199642
199747
199861
199925
20008
200136
200224
20038
200488
2005120
200620
20078
200818
20095
20108
201113
20120
20131
20142
20157
201623
201710
20180
Total1082