*Excludes Observations that spanned multiple years

Pre 19709
19700
19710
19720
19730
19740
19751
19760
19770
19780
19790
19801
19810
19820
19830
19840
19850
19862
19872
19888
19893
19904
19911
19925
19931
19948
19952
19960
19970
19981
19996
20008
20011
20021
20031
20040
20052
20062
20070
20080
20090
20104
20110
20120
20134
20140
20150
20162
20174
20183
201910
20206
20216
20226
20231
20240
Total115