*Excludes Observations that spanned multiple years

Pre 19703
19700
19711
19720
19730
19740
19751
19767
19777
19780
19791
19803
198114
19820
19832
19841
19851
19865
19871
198830
198913
19905
199126
199256
199348
199420
199537
19968
199791
19986
199930
200011
200165
20027
20032
20040
20059
200622
20072
200811
20095
201053
201136
201211
2013108
2014119
201594
2016164
2017208
2018190
2019343
2020281
2021319
2022268
20237
20241
Total2753