How to fetch the top four salaries without duplicate records ?

For example we have a Employee table like below, in this we need (nagarjuna,2000), (vijay,3000),(Ram,4000) and (bharani,5000) records.

 Employee Table Data :

NAME	SALARY
venkat	1000
satya	1000
nagarjuna	2000
jyothi	2000
krishna	2000
vijay	3000
Anil	3000
Ram	4000
bharani	5000

 Expected Result :

NAME	SALARY
bharani	5000
Ram	4000
Anil	3000
jyothi	2000

Query to fetch the expected result,

SELECT TOP 4 salary, 
             name 
FROM   (SELECT salary, 
               name, 
               Row_number() 
                 OVER( 
                   partition BY salary 
                   ORDER BY salary DESC) AS Record_count 
        FROM   employee 
        GROUP  BY salary, 
                  name) e 
WHERE  record_count = 1 
ORDER  BY salary DESC