There are no other data points from the 90s, but according to this table it was 147.7 in 1990, 148.3 million people for 91 and 96 and the number decreased to 146.3 in 2001.
Bowker counted over 235, 000 titles self-published in print and digital compared to 148, 424 titles in 2011, although it counts only those books with ISBNs.
The Plan A drill -- a mining drill -- reached 148 meters (486 feet), but the hole it was drilling would still need to be widened to 70 centimeters (27.5 inches) to accommodate the rescue capsule.