*Excludes Observations that spanned multiple years

Pre 197078
19701
19711
19720
19731
19743
19756
19765
19774
19783
19794
198018
19815
19826
19839
198418
198598
198696
198793
198872
198996
1990194
199180
199284
1993166
1994172
1995342
1996118
1997591
1998850
1999767
20004791
20011267
20021139
200312790
200414269
20055008
20063910
20072749
20082647
200910127
20103613
20113620
20123945
20133202
20143781
20153066
20163995
20173320
20182238
20191287
2020128
20210
20220
Total94873