*Excludes Observations that spanned multiple years

Pre 19702
19700
19710
19720
19730
19740
19750
19761
19771
19780
19791
19801
19810
19821
19831
19841
19850
198616
19871
19881
19895
19901
199156
199216
199375
19946
199547
199613
19978
19982
19996
20002
20017
200213
20038
20041
20052
20066
20070
20088
200911
201028
201159
20121
201336
201416
20151
201631
2017121
2018134
2019161
202076
2021107
2022143
2023159
20241
Total1394