*Excludes Observations that spanned multiple years

Pre 1970242
197013
19712
19727
19735
19741
19759
19761
19772
19782
19793
19801
19813
19820
19832
19840
19854
19861
19870
19880
19890
19902
19910
19920
19930
19943
19950
19967
19977
19987
19992
20001
20013
20027
20033
20042
200530
200682
200726
20085
200935
201032
201123
201215
201380
20148
20157
20163
201724
20188
20196
20204
20212
20225
20234
20243
Total744