What's the most recent figure of Hubble's constant and how do I use it to calculate the age of the universe?

Some sources say that Hubble's constant is 70 (km/s)/Mpc while some sources say it's 71 卤 4 (km/s)/Mpc or 77 (km/s)/Mpc. Which is correct? I need the 'most recent figure'. And how to I use it to calculate the age of the universe? I know that it's just 1/H but if it has a 卤, how do I calculate it?What's the most recent figure of Hubble's constant and how do I use it to calculate the age of the universe?
As of 2003, Hsub0 was estimated at 70.1 卤 1.3 (km/s)/Mpc. In standard units, that is about 2.28 x 10^-18/sec. Divide the speed of light (3 x 10^8 m/sec) by Hsub0 to get the Hubble limit of 1.316 x 10^26 m. Divide by the number of meters in a light year to get the radius of the observable universe in light years. Divide by the speed of light to get the alleged age of the universe in years.





Be advised that all this bunk is based on the lie that 100% of the observed red shift of distant galaxies is cause by the Doppler effect because of the expansion of the universe. I spent last week at the Cricis in Cosmology Conference in Port Angeles, WA, where at least half a dozen other probable sources of redshift were described. Many of the scientists there believe the universe is not expanding, at all. My own opinion is that it is expanding, but slower than what proponents of Big Bang theory say. Slower expansion implies an older universe and a larger observable universe. What's the most recent figure of Hubble's constant and how do I use it to calculate the age of the universe?
71 is better.