*Excludes Observations that spanned multiple years

Pre 197022
19701
19712
19720
19730
19741
19751
19760
19772
19781
19790
19800
19810
19820
19830
19840
19850
19860
19870
19880
19891
19904
19917
199212
19932
19946
199556
199615
19975
19980
19990
20000
20011
20022
20031
20041
20050
200617
20071
20086
20093
20100
20112
20120
20134
20141
20151
20164
20170
20181
20190
20201
20214
20220
20230
20240
Total188