*Excludes Observations that spanned multiple years

Pre 19701
19700
19710
19720
19737
19740
19750
19761
19770
19780
19790
19800
19810
19820
19830
19840
19852
19860
19870
19880
19890
19900
19910
19920
19930
19940
19951
19960
19971
19982
19990
20000
20011
20020
20030
20040
20051
20060
20070
2008115
200956
2010212
2011381
2012616
201385
201414
20151072
20161538
2017216
2018379
2019301
2020210
2021274
2022241
2023168
20244
Total5899