*Excludes Observations that spanned multiple years

Pre 197016
19706
19717
197211
19734
19743
19759
19762
19773
19781
19796
198015
198123
19824
198324
198422
198524
19867
19878
198879
1989134
199031
199176
199264
1993106
1994163
1995151
1996114
1997160
1998101
1999395
200071
2001114
2002525
2003169
200413
20056
20064
20071
20081
20091
20107
20116
201212
20135
20144
201523
20164
20173
Total2738