If the number is doubles its total is doubled since its total is itself!
Since the perimeter is a linear measure it is also doubled.
All motor vehicles produced since the 1950s have AM radios, except for the rare General Motors EV1 electric car which has only an FM radio. However almost all vehicles sold since the late 1970s have come with FM radios as well.
It has doubled in population since statehood.
You do not say what state you are in. Since registration is governed by the state I would suggest that you look for a web site for your state and its' department of Motor Vehicles. It is likely that your question can be answered there.
The population doubled since 1970
Using Refrigerators Air-conditioners Since CFC evolved from it Increased usage of Motor Vehicles Since Smoke evolved from it Increased Industries
The exact amount is most likely never to be known, as many are constintly changing. In 2004 the number was 106,230 but that number as doubled since then and probably tripled.
As of 1999, there had been more than 2,300 versions of the Barbie doll made since 1959. The number has probably doubled by now.
Most all vehicles since about 1994
As a percent of the U.S. Population Hispanics have more than doubled since 1980, and the actual Hispanic population (number of souls counted) has more than tripled since then.
Also double since potential energy is the energy stored in a body due it's position.