*Excludes Observations that spanned multiple years

Pre 197071
19700
19711
19721
19731
19740
19752
19761
19770
19783
19791
19801
19811
19820
19832
19840
19850
19861
19870
19883
19892
19903
199116
19926
19938
199413
19957
19966
19974
19982
19995
20007
20018
20027
20033
20048
20053
200611
200724
200828
200937
201021
201116
201214
201318
20146
201512
201620
201723
201810
20191
20200
20210
20220
Total438