*Excludes Observations that spanned multiple years

Pre 19701
19700
19714
197231
197312
19740
19750
19760
19770
19782
19793
19800
19810
19821
19835
1984112
1985178
1986217
1987445
19881083
1989150
1990139
1991439
1992163
1993550
1994514
1995195
1996104
199771
199824
1999147
2000101
200148
200235
200398
200485
2005103
200690
200785
200882
200992
201098
201193
2012140
201394
201498
201590
201692
201778
20183
20190
20200
Total6195