How many plays by William Shakespeare have been converted into modern films?

The IMdb lists almost 800 films which credit William Shakespeare as a writer. These include silent movies, black-and-white movies, TV movies, films of live performances of plays, films adapted from live productions, films which use Shakespeare's dialogue, films which use some of the plot elements of Shakespeare's plays but make up their own dialogue, and films which resemble Shakespeare's plays in some respect.

The question talks about plays being "converted", not new plays written on the same theme, so I assume we are talking about films which use Shakespeare's actual words. At the same time the word "converted" suggests a transformation; not just the filming of a stage production, but the creation of a screenplay with film in mind from the outset.

Finally, how "modern" is "modern"? Any answer is going to be fairly arbitrary, so I will list only major releases since the second World War.

Hamlet: Olivier 1948; Mel Gibson 1991; Kenneth Branagh 1996
Romeo and Juliet: Zeffirelli 1968, DiCaprio and Danes 1996
Othello: Fishburne and Branagh 1995
Julius Caesar: Marlon Brando 1953
Macbeth: Polanski 1971
Titus Andronicus: Julie Taymor & Anthony Hopkins 2000 (under title "Titus")
Henry V: Olivier 1944, Branagh 1989
Richard III: Olivier 1955, Ian McKellen 1995
Much Ado About Nothing: Branagh 1994
Twelfth Night: Imogen Stubbs & Helena Bonham-Carter 1997
Midsummer Night's Dream: Kevin Kline & Michelle Pfeiffer 1999
The Merchant of Venice: Al Pacino 2004
Love's Labour's Lost: Branagh 2000
As You Like It: Branagh 2006
Taming of the Shrew: Zeffirelli 1967 (with Richard Burton and Liz Taylor)

That's about 15 different plays.