No chart image found

*Excludes Observations that spanned multiple years

Pre 19701
19701
19710
19722
19730
19741
19750
19760
19770
19780
19791
19800
19810
19821
19831
19840
19850
19866
19871
19880
19892
19903
19913
19920
19932
19943
19951
19960
19971
19982
19990
20000
20010
20020
20031
20041
20050
20060
20071
20081
20090
20101
20110
20121
20131
20140
20151
20161
20170
20181
20190
20200
20210
Total42