*Excludes Observations that spanned multiple years

Pre 197024
197011
197117
197211
19739
19747
19752
19767
197710
19785
19791
19804
19811
19821
19836
19842
19853
19869
19871
198892
1989106
199079
1991403
1992249
1993199
1994544
1995467
1996288
1997280
1998353
1999292
2000604
2001408
2002578
200313
20044
20052
200611
20071
20080
20093
201013
20119
20128
20133
201413
20157
20164
20177
20184
201910
20204
20216
20220
Total5195