*Excludes Observations that spanned multiple years

Pre 19701
19700
19710
19720
19737
19740
19750
19761
19770
19781
19791
19800
19810
19821
19830
19841
19850
19860
19870
19880
19891
19900
19910
19921
19931
19940
19950
19961
19971
19980
19990
20000
20010
20020
20030
20040
20050
20060
20070
200852
200922
201082
2011158
2012703
201335
2014316
2015611
201695
2017131
201873
2019267
2020192
2021312
2022238
2023157
20246
Total3468