*Excludes Observations that spanned multiple years

Pre 197027
19701
19715
197215
19734
19740
19750
19762
19771
19780
19791
19800
19810
19820
19831
19840
19850
19861
19878
19880
19894
19902
199113
19923
19932
19942
19956
199610
199727
19984
199921
200013
20012
20021
20031
20041
20050
20060
20071
20080
20092
20100
20111
20120
20130
20141
20151
20160
20173
20180
20191
20200
Total188