*Excludes Observations that spanned multiple years

Pre 197012
19701
19718
19720
19731
19740
19754
19764
197716
19789
197911
19806
198113
19821
198316
19847
198530
198693
1987132
1988526
198983
199081
1991445
1992476
1993530
1994130
1995548
1996240
1997275
1998112
1999175
2000172
2001288
2002100
2003129
2004199
2005114
2006117
2007145
2008135
2009155
2010399
2011239
2012107
2013179
2014172
2015133
2016272
2017330
2018301
2019380
2020286
2021358
2022406
2023379
202445
Total9525