*Excludes Observations that spanned multiple years

Pre 19707
19700
19710
19720
19732
19742
19754
19764
19771
197817
197910
19803
19811
19822
19835
19844
19859
19865
19877
19885
19892
199049
199110
199256
199329
199419
199512
199615
199739
199827
199939
200087
200141
200261
2003160
2004138
2005180
2006242
200759
2008103
2009169
2010161
2011133
201254
201345
201442
201542
201610
20170
20180
Total2112