*Excludes Observations that spanned multiple years

Pre 197037
19701
19710
19720
19731
19741
19750
19762
19772
19783
19793
19801
19811
19821
19834
19840
198516
198612
198719
198817
198919
199010
199131
199221
199316
199416
199526
199638
199748
199812
199940
2000994
200139
200223
200370
2004253
2005164
2006333
200777
2008174
2009162
2010301
2011326
2012137
2013127
2014196
2015303
20161090
2017136
201848
201915
20207
20210
Total5373