*Excludes Observations that spanned multiple years

Pre 19709
19700
19711
19720
19730
19740
19751
19760
19771
19780
19790
19801
19810
19820
19830
19840
19850
19863
19871
19889
19893
19904
19917
19920
19933
19940
19951
19961
19970
19980
19992
20005
20010
20021
20032
20044
20056
200610
200718
20086
200910
20106
20117
201210
20138
20148
20155
20169
201712
201811
20194
20203
20213
20227
20230
20240
Total202