Q: YahooFinancials module how to access historical balance sheet data I am using the new Yahoofinancials Module to get financial statement data. Specifically the historical data from financial statements. The code I am using only returns the most recent piece of data. In the module description it states that

Quarterly statement data returns the last 4 periods of data, while
  annual returns the last 3.

How to access these last 3 or 4 periods of data?
from yahoofinancials import YahooFinancials as YF

tickers = ['aapl', 'fb', 'goog']
for ticker in tickers:
        yf = YF(ticker)
        CurrentAssets = yf._financial_statement_data('balance', 'balanceSheetHistoryQuarterly', 'totalCurrentAssets', 'quarterly')

This code will give me the most recent piece of data for the current assets. How can I access the older 3 or 4 data pieces?
