Year	Percent
1950	6.96988
1955	6.299
1960	5.90051
1965	5.75979
1970	5.75899
1975	5.89967
1980	5.96405
1985	5.92517
1990	6.35256
1995	6.38334
2000	6.45557
2005	6.60941
2010	6.59939
2015	6.56044
2020	6.93307
2025	7.53922
2030	8.20741
2035	8.90582
2040	9.76893
2045	10.86369
2050	12.27438
2055	13.60688
2060	14.80623
2065	15.70522
2070	16.87487
2075	18.33066
2080	19.71088
2085	20.89725
2090	21.89323
2095	22.83489
2100	23.86876