Year	Percent
1950	4.83968
1955	4.91737
1960	5.2054
1965	5.33272
1970	5.33923
1975	5.25623
1980	5.1284
1985	5.02842
1990	5.36433
1995	5.246
2000	5.04836
2005	4.83483
2010	4.68325
2015	4.76889
2020	4.99934
2025	5.41135
2030	5.96481
2035	6.62935
2040	7.31949
2045	7.86444
2050	8.20624
2055	8.49878
2060	9.01506
2065	9.80724
2070	10.90997
2075	12.10501
2080	13.14847
2085	14.16568
2090	15.24772
2095	16.41502
2100	17.60297