*Excludes Observations that spanned multiple years

Pre 19706
19700
19711
19720
19730
19740
19750
19760
19770
19780
19790
19801
19810
19820
19830
19840
19850
19862
19879
198827
19890
19909
19913
199211
19934
19941
19953
19961
199711
19986
199914
200017
20010
20025
200313
20040
20050
20062
20070
200816
20093
20105
20113
20122
20138
20140
20152
20163
20170
20180
20191
20200
20210
20221
20230
20240
Total190