Currency exchange price rate

Foreign currency price both latest and historical via formulas.

Supported currencies:
- Australian dollar (AUD)
- Bulgarian lev (BGN)
- Brazilian Real (BRL)
- Canadian Dollar (CAD)
- Swiss Franc (CHF)
- Chinese Yuan (CNY)
- Czech Republic Koruna (CZK)
- Danish Krone (DKK)
- Euro (EUR)
- British Pound Sterling (GBP)
- Hong Kong Dollar (HKD)
- Croatian Kuna (HRK)
- Hungarian Forint (HUF)
- Indonesian Rupiah (IDR)
- Israeli New Sheqel (ILS)
- Indian Rupee (INR)
- Icelandic Króna (ISK)
- Japanese Yen (JPY)
- South Korean Won (KRW)
- Mexican Peso (MXN)
- Malaysian Ringgit (MYR)
- Norwegian Krone (NOK)
- New Zealand Dollar (NZD)
- Philippine Peso (PHP)
- Polish Zloty (PLN)
- Romanian Leu (RON)
- Russian Ruble (RUB)
- Swedish Krona (SEK)
- Singapore Dollar (SGD)
- Thai Baht (THB)
- Turkish Lira (TRY)
- United States Dollar (USD)
- South African Rand (ZAR)