*Excludes Observations that spanned multiple years

Pre 19706
19700
19710
19720
19730
19740
19750
19760
19771
19780
19791
19800
19812
19821
19833
19840
19852
19860
19870
198811
19893
19904
19914
19923
19932
19940
19952
19961
19970
19983
19994
20002
20013
20022
20032
200415
20056
20066
200728
20087
200930
201015
20119
201212
20132
20143
20152
20160
20171
2018131
2019231
2020158
2021308
2022218
202398
202415
Total1357