给定一段英文文本，计算其中每个单词出现的次数，并按出现次数从高到低的顺序输出结果。


I have a dream that one day this nation will rise up and live out the true meaning of its creed: We hold these truths to be self-evident, that all men are created equal.
I: 1
have: 1
a: 1
dream: 1
that: 1
one: 1
day: 1
this: 1
nation: 1
will: 1
rise: 1
up: 1
and: 2
live: 1
out: 1
the: 2
true: 1
meaning: 1
of: 1
its: 1
creed: 1
We: 1
hold: 1
these: 1
truths: 1
to: 1
be: 1
self-evident: 1
all: 1
men: 1
are: 1
created: 1
equal: 1