*Excludes Observations that spanned multiple years

Pre 19704
19702
19718
19720
19731
19740
19750
19762
19779
19780
19790
19800
19814
19820
19832
19846
198571
1986128
1987194
1988407
1989358
199032
1991202
199272
1993422
1994818
1995411
1996345
1997233
199823
199953
200045
200159
200230
200382
200479
200598
200669
200793
200875
200973
201091
201182
201298
2013114
201487
201586
201671
201785
20186
20190
20201
20211
Total5232