*Excludes Observations that spanned multiple years

Pre 19705
19701
19710
19720
19730
19740
19751
19761
19771
19783
19792
19800
19811
19821
19830
19847
19855
19865
19872
198869
19891
199041
1991191
1992198
1993212
199439
199583
199659
19972
19981
199981
200081
2001125
200242
200326
200485
20056
200676
200750
200829
200929
201024
201155
20126
201310
201419
201520
201640
201751
201817
2019129
202037
202169
202251
202355
20249
Total2153