*Excludes Observations that spanned multiple years

Pre 19701
19700
19710
19720
19730
19740
19750
19761
19770
19780
19791
19800
19810
19820
19830
19840
19850
19860
19870
19881
19890
19900
19911
19920
19933
19940
19952
19962
19971
19984
19991
20001
20010
20020
20031
20040
20050
20062
20070
20080
20091
20102
20112
20121
20132
20144
20150
20164
20175
20182
20191
202027
202130
202247
202331
202442
Total223