*Excludes Observations that spanned multiple years

Pre 197027
19708
19713
19721
19732
19741
19752
19760
19771
19781
19791
19800
19810
19820
19831
19840
19856
19862
19874
19882
19892
19902
19912
19923
19936
19941
19952
19963
19976
19981
19991
20005
20010
20022
20030
20040
20053
20060
20070
20087
20092
20100
20110
20120
20130
20140
20150
20162
20170
20180
20190
20200
20210
Total112