*Excludes Observations that spanned multiple years

Pre 197037
19700
19710
19720
19730
19742
19750
19760
19770
19780
19794
19801
19810
19820
19831
19843
19850
19863
19871
198815
19896
19902
19913
199218
199331
199455
199521
19962
19977
199810
19991
20000
20012
200210
200310
200410
20059
20063
20073
20087
20091
20104
20114
20124
20133
20142
20151
20164
20176
20189
201910
20208
202116
202220
202312
20243
Total384