*Excludes Observations that spanned multiple years

Pre 19702
19700
19710
19720
19730
19740
19758
197610
19770
197812
19790
19800
19811
19821
19835
19847
19853
19865
19873
19884
19893
19903
19911
19925
19933
199410
199513
199636
199784
199871
199996
2000106
200157
200251
2003105
200478
2005134
2006151
200755
200870
2009130
2010192
2011129
201260
201341
201451
201565
201611
20170
20180
Total1872