The Lectionary and the Bible

Interesting note: with apologies to a revered liturgy professor of mine, the Lectionary for the revised Roman Missal does not contain all, or even most of Holy Scripture. From An Introduction to the Homily by Robert Waznak:

The Missale Romanum of 1570 contained about 5 percent of the Bible--1 percent of the Old Testament and 16 percent of the New. The new Lectionary contains approximately 13 percent of the Bible--6 percent of the Old Testament (not counting the Psalms) and 41 percent of the New.

Just an FYI. This has always been a question of mine.