*Excludes Observations that spanned multiple years

Pre 197094
19701
19710
19722
19731
19742
19751
19761
19777
197841
19793
19800
19810
19820
19832
19840
19850
19864
19872
19881
19890
19900
199123
199212
199344
199440
1995140
199669
1997173
1998198
199964
2000138
2001232
2002161
2003171
2004437
200521
2006155
200719
200845
200939
201098
201148
201229
201311
20147
201517
201632
20175
Total2590