*Excludes Observations that spanned multiple years

Pre 19703
19700
19715
19720
19730
19740
19750
19760
19770
19780
19790
19801
19810
19820
19831
19840
198521
198663
1987111
198859
198913
199025
199139
199263
199350
19945
1995171
199680
1997189
19986
1999118
200054
200143
200233
20033
20043
20052
20060
20072
20080
20092
20103
20113
20122
20132
20143
20154
20163
20176
20180
20198
20209
202114
202219
20231
20240
Total1242