"Year"	"BBA_BS"	"GHA_BS"	"WA_BS"
"1976"	0.708	0.737	NA
"1977"	0.75	0.632	NA
"1978"	0.036	0.643	NA
"1979"	0.375	0.617	NA
"1980"	0	0.352	0.519
"1981"	0.417	0.4	0.577
"1982"	0.474	0.636	0.667
"1983"	0.423	0.463	0.538
"1984"	0.045	0.244	0.585
"1985"	0.7	0.392	0.491
"1986"	0.28	0.659	0.517
"1987"	0.071	0.239	0.477
"1988"	0	0.053	0.588
"1989"	0.167	0.636	0.597
"1990"	0.293	0.319	0.548
"1991"	0	0.526	0.443
"1992"	0.231	0.263	0.534
"1993"	0.384	0.667	0.671
"1994"	0.015	0.279	0.44
"1995"	0	0.13	0.588
"1996"	0.471	0.652	0.419
"1997"	0.381	0.472	0.629
"1998"	0.024	0.015	0.721
"1999"	0.467	0.464	0.701
"2000"	0.304	0.207	0.724
"2001"	0.254	0.3	0.697
"2002"	0.376	0.175	0.716
"2003"	0.134	0.322	0.698
"2004"	0.254	0.066	0.785
"2005"	0.229	0.02	0.671
"2006"	0.276	0.383	0.895
"2007"	0.625	0.75	0.754
"2008"	0.549	0.646	0.769
"2009"	0.593	0.375	0.836
"2010"	0.348	0.534	0.758
"2011"	0.462	0.372	NA
"2012"	0.446	0.196	NA
"2013"	0.491	0.471	NA