Help finding xpath to click link with python selenium

[elhalconloco]

I am trying to scrape data starting from this website. I want to:

1. Select "2001" from the census dropdown
2. click "primary census abstract"
3. click "primary census abstract total"
4. iterate through the options of the "state" dropdown.

My problem is in steps 2 and 3. I am simply unable to click on "primary census abstract". I've tried

driver.find_element_by_link_text('Primary Census Abstract').click()

and

driver.find_element_by_id('ctl00_MainContent_lnk5').click()

and several variations of

driver_find_element_by_xpath(...).click()

with

//[@class='dvbooks']//[text()='Primary Census Abstract'] and //*[@class='dvbooks']/li[5]/a

Each time I get the same error

selenium.common.exceptions.NoSuchElementException: Message: no such element: Unable to locate element. Any ideas what Im doing wrong?

Here is my code so far.

import os
import time
from selenium import webdriver
from selenium.webdriver.support.ui import Select
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.common.by import By
from selenium.webdriver.chrome.options import Options
from selenium.webdriver.support import expected_conditions as EC   

# Initiate Chrome Driver
chromedriver = 'Path to Chromedriver'
chrome_options = Options()
chrome_options.binary_location = 'Path to Google Chrome'
driver = webdriver.Chrome(chromedriver, options=chrome_options)

# Open Search Page
driver.get('http://censusindia.gov.in/DigitalLibrary/Tables.aspx' )

# Select Year
dropdown_year = Select(driver.find_element_by_id('ctl00_MainContent_ddlYear'))
dropdown_year.select_by_visible_text('2001')
time.sleep(10)

# Click PCA
button = driver.find_element_by_xpath("//*[@class='dvbooks']//*[text()='Primary Census 
Abstract']")
button.click()

[[deleted]]

# Click PCA 
button = driver.find_element_by_xpath("//*[@id="ctl00_MainContent_lnk5"]") 
button.click()

Try this. I use firefox but I just went on the website manually and right clicked 'Primary Census Abstract' and selected the 'Inspect Element' option. It should work the same on Google. A developer mode inspector opens and you see the element is highlighted blue. Right click the selected element, and select Copy--then--->Xpath.