*Excludes Observations that spanned multiple years

Pre 1970145
19704
19712
19721
19731
19742
19754
19762
19773
19781
19796
19802
19812
19821
19832
19845
198553
198672
1987146
1988298
198945
199019
1991194
199263
1993390
1994255
1995269
1996152
199795
199815
199991
200088
200166
200249
200380
200487
200595
200669
200784
200897
200983
2010107
201186
2012111
201396
2014101
2015109
2016105
201796
201858
201944
202037
2021117
202279
202349
20240
Total4333