*Excludes Observations that spanned multiple years

Pre 197010
19700
19711
19720
19730
19740
19751
19760
19770
19780
19791
19800
19810
19821
19830
19840
19850
19865
198720
1988112
19890
199014
1991153
1992125
1993110
19943
199590
199643
199718
19984
199946
200057
200160
200215
20030
200450
200518
20065
20071
20089
20096
20104
201117
20121
20132
20141
20150
20162
20172
201820
201921
202012
20210
20220
Total1060