Year	Percent
1950	14.76765
1955	7.94944
1960	8.93762
1965	10.761
1970	12.27543
1975	12.14217
1980	10.12496
1985	9.98369
1990	9.62202
1995	9.76907
2000	10.73858
2005	9.11427
2010	6.96974
2015	6.41632
2020	8.6288
2025	10.11565
2030	8.90042
2035	7.82721
2040	7.12619
2045	6.98925
2050	7.18717
2055	7.35864
2060	7.23376
2065	6.81643
2070	6.36008
2075	6.10681
2080	6.05157
2085	6.05915
2090	5.99678
2095	5.83219
2100	5.62335