*Excludes Observations that spanned multiple years

Pre 197053
19707
19711
19722
19731
19740
19750
19763
19771
19781
19790
19801
19810
19820
19830
19840
19850
19861
19870
19880
19896
19908
19915
19925
199317
199423
199522
19966
199711
199814
199911
20000
20015
20024
200341
200430
200545
200691
200735
2008140
2009140
2010101
201139
201291
2013148
2014200
201521
201626
20173
Total1359