*Excludes Observations that spanned multiple years

Pre 19703
19700
19710
19720
19732
19740
19750
19760
19770
19780
19790
19800
19810
19821
19837
19840
19851
19863
198715
19884
19899
19900
19911
19922
19932
19942
19955
19960
19972
19981
19996
200010
20010
20020
200311
20040
20050
20061
20079
20087
20098
201017
20117
20127
201341
201412
20151
20162
20170
20183
20190
20200
20210
20222
20233
20241
Total208