*Excludes Observations that spanned multiple years

Pre 19700
19701
19710
19720
19731
19740
19750
197611
197710
19780
19793
19802
19818
19820
19830
19842
19850
19867
19876
19882
19894
19901
19914
199224
199351
199410
199523
19964
199741
19983
19995
20002
200118
20027
200327
20046
200512
200626
20070
20081
20093
201036
201168
20125
2013115
2014143
2015125
2016190
2017291
2018249
2019313
2020359
2021419
2022369
202325
202416
Total3048