*Excludes Observations that spanned multiple years

Pre 197032
19701
19712
19720
19730
19741
19750
19760
19771
19780
19791
19802
19810
19820
19831
19840
19850
19860
19870
19880
19890
19900
19910
19923
19930
19940
19952
19961
19971
19980
19993
20001
20012
20021
2003755
200499
2005206
200682
2007211
200848
2009595
20105
20116
20121
20131
2014148
20153
2016110
20178
20181
Total2334