Year	Percent
1950	9.90586
1955	8.44584
1960	8.01598
1965	8.24729
1970	7.86232
1975	7.14135
1980	6.11613
1985	5.1661
1990	5.66789
1995	6.47346
2000	6.33952
2005	6.01005
2010	5.86632
2015	5.18708
2020	5.32461
2025	5.59733
2030	5.70452
2035	5.60965
2040	5.43887
2045	5.28993
2050	5.26146
2055	5.35143
2060	5.43275
2065	5.41588
2070	5.31006
2075	5.1862
2080	5.11443
2085	5.1055
2090	5.12107
2095	5.11346
2100	5.053